T F PURIFINER INC
8-K/A, 1998-02-12
MOTOR VEHICLE PARTS & ACCESSORIES
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549



                                   FORM 8-K/A



                                 CURRENT REPORT


                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934






Date of Report (Date of earliest event reported)          January 26, 1998
                                                   -----------------------


                     PURADYN FILTER TECHNOLOGIES INCORPORATED
             (Exact name of registrant as specified in its charter)


     DELAWARE                        0-29192                    14-1708544
(State or other jurisdiction       (Commission               (I.R.S. Employer
    of incorporation)               File Number)             Identification No.)


3020 High Ridge Road, Suite 100, Boynton Beach, Florida          33426
(Address of principal executive offices)                      (Zip Code)


Registrant's telephone number, including area code:    (561) 547-9499


                               T/F Purifiner, Inc.
          (Former name or former address, if changed since last report)


<PAGE>


ITEM 5 - OTHER EVENTS

         On January 26, 1998, the Company entered into a Note Exchange Agreement
with Quantum Industrial Partners, LDC pursuant to which the Company issued its
12% Senior Subordinated Convertible Note in the principal amount of $2 million
in exchange for the Company's Promissory Note in the original principal amount
of $2 million issued pursuant to the Securities Purchase Agreement dated June
19, 1997 between the parties. The original Promissory Note did not provide for a
stated rate of interest and was not convertible. The Exchange Note matures on
January 1, 2003 and bears interest at the rate of 12% per annum payable in cash
quarterly on April 1, July 1, October 1, and January 1 of each year commencing
April 1, 1998. The Company has the right, however, at its option, on or prior to
any interest payment date to accrue the interest payable and add it to the
principal balance of the Exchange Note.

         The Exchange Note is convertible on or prior to the close of business
on January 1, 2003 into Common Stock of the Company at the rate of one share of
Common Stock for each $2.75 principal amount of the Exchange Note. The Exchange
Note is redeemable by the Company at any time, in whole or in part, at 100% of
the principal amount thereof plus accrued and unpaid interest. The Exchange Note
is also redeemable at the option of QIP, in whole or in part, at any time on or
after the earlier of (i) January 1, 2001 and (ii) the date on which the Company
raises cash proceeds aggregating at least $10 million from any transaction or
series of transactions involving the sale of debt, equity or assets.

         In addition, the Company entered into a separate Note Purchase
Agreement dated as of January 26, 1998 with QIP pursuant to which the Company
received additional funding of $500,000 from QIP and issued its 12% Senior
Subordinated Convertible Note in that amount. The Note matures on January 1,
2003, bears interest at the rate of 12% per annum and is convertible and
redeemable on substantially the same terms and conditions as provided in the
Exchange Note. The parties also agreed that the Common Stock into which the
Exchange Note and the Note are convertible would have the benefit of the
Registration Rights Agreement initially entered into by the parties on June 19,
1997.

         On February 4, 1998, the Company filed a Certificate of Amendment to
the Certificate of Incorporation which changed the name of the Company from T/F
Purifiner,Inc. to Puradyn Filter Technologies Incorporated.

ITEM 7 - FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND
         EXHIBITS

(c)      Exhibit:


                  (1) Certificate of Amendment dated February 4, 1998 to
                      Certificate of Incorporation (Exhibit 3.1(a).


                                       2
<PAGE>

                  (2) Note Exchange Agreement dated as of January 26, 1998
                      (Exhibit 10.16).

                  (3) 12% Senior Subordinated Convertible Note in the principal
                      amount of $2 million (Exhibit 10.17).

                  (4) Note Purchase Agreement dated as of January 26, 1998
                      (Exhibit 10.18).

                  (5) 12% Senior Subordinated Convertible Note in the principal
                      amount of $500,000 (Exhibit 10.19).

                  (6) Amendment No. 1 to Registration Rights Agreement (Exhibit
                      4.1).


                                       3

<PAGE>


                                    SIGNATURE


         Pursuant to the requirements of the Securities and Exchange Act of
1934, the Registrant has duly caused this report to be signed on its behalf by
the undersigned hereunto duly authorized.

                           PURADYN FILTER TECHNOLOGIES
                                   CORPORATION


                                              By: /s/Keith T.J. Hart
                                                  -----------------------------
                                                     Keith T.J. Hart, President

February 12, 1998.


                                       4


                                                                       PAGE 1
                                State of Delaware

                        Office of the Secretary of State


         I EDWARD J. FREEL, SECRETARY OF STATE OF THE STATE OF DELAWARE, DO
HEREBY CERTIFY THE ATTACHED IS A TRUE AND CORRECT COPY OF THE CERTIFICATE OF
AMENDMENT OF "T/F PURIFINER, INC.", CHANGING ITS NAME FROM "T/F PURIFINER, INC."
TO "PURADYN FILTER TECHNOLOGIES INCORPORATED", FILED IN THIS OFFICE ON THE
FOURTH DAY OF FEBRUARY, A.D.
1998, AT 11 O'CLOCK A.M.












                                        --------------------------------------
                                        /s/Edward J. Freel, Secretary of State



2153143 8100                                         AUTHENTICATION: 8902175

981044484                                                     DATE: 02-04098


<PAGE>


                            CERTIFICATE OF AMENDMENT
                                       OF
                          CERTIFICATE OF INCORPORATION
                               T/F PURIFINER INC.

         T/F Purifiner, Inc. (the "Corporation"), a corporation organized and
existing under and by virtue of the General Corporation Law of the State of
Delaware, DOES HEREBY CERTIFY:

         FIRST: That the Board of Directors of the Corporation have adopted a
resolution proposing and declaring advisable the following amendment to the
Certificate of Incorporation of the Corporation:

         RESOLVED, that the Certificate of Incorporation of T/F Purifiner, Inc.
         be amended by changing Article I thereof, so that, as amended, said
         Article I shall be and read as follows:

                                   "ARTICLE I
                                      NAME

         The name of the Corporation is "Puradyn Filter Technologies
Incorporated"

         SECOND: That in lieu of a meeting and vote of stockholders, the holders
of outstanding shares of Common Stock having not less than the minimum number of
votes which would be necessary to authorize or take such action at a meeting at
which all shares entitled to vote thereon were present and voted have given
their written consent to said amendment in accordance with the provisions of
Section 228 of the General Corporation Law of the State of Delaware.

         THIRD: That the aforesaid amendments were duly adopted in accordance
with the applicable provisions of Section 242 and Section 228 of the General
Corporation Law of the State of Delaware.

         IN WITNESS WHEREOF, the Corporation has caused this Certificate to be
signed by Keith T.J. Hart, its President, this 3rd day of February, 1998.

                                           T/F PURIFINER, INC.


                                           By: /s/ Keith T.J. Hart, President
                                               -------------------------------
                                                   Keith T.J. Hart, President




                             NOTE EXCHANGE AGREEMENT

                                   dated as of

                                January 26, 1998

                                      among

                         QUANTUM INDUSTRIAL PARTNERS LDC

                                       and

                               T/F PURIFINER, INC.




<PAGE>


                             NOTE EXCHANGE AGREEMENT


         AGREEMENT dated as of January 26, 1998 among Quantum Industrial
Partners LDC, a Cayman Islands exempted limited liability duration company
("QIP") and T/F Purifiner, Inc., a Delaware corporation (the "Company").


                               W I T N E S S E T H

         WHEREAS, pursuant to a certain Securities Purchase Agreement dated June
19, 1997 by and between QIP and the Company, QIP purchased from the Company,
among other things, a promissory note in the original principal amount of
$2,000,000 dated as of June 19, 1997, a copy of which is attached hereto as
Exhibit A (the "Original Note");

         WHEREAS, the Company desires to issue the Exchange Note (as hereinafter
defined) in payment for the Original Note and has requested that QIP accept the
exchange; and

         WHEREAS, QIP is willing to exchange the Original Note for the Exchange
Note on the terms and subject to the conditions set forth herein.

         NOW, THEREFORE, the parties hereto agree as follows:


                                    ARTICLE I


                                   DEFINITIONS

         1.1 Definitions. The following terms, as used herein, have the
following meanings:

         "Affiliate" means, with respect to any Person, any other Person
directly or indirectly controlling, controlled by, or under common control with
such Person.

         "Common Stock" means the Common Stock, par value $.001 per share, of
the Company.

         "Encumbrances" means all voting trusts, arrangements, stockholder
agreements, proxies, liens, encumbrances, transfer restrictions, preemptive
rights, security, interests or community property rights.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended.

         "Exchange Note" shall have the meaning set forth in Section 2.1 hereof.

         "Material Adverse Effect" means a material adverse effect on the
assets, properties, business, prospects, operations or condition, financial or
otherwise, of the Company.
 
                                      1
<PAGE>

         "Person" means an individual, corporation, limited liability company,
partnership, association, trust or other entity or organization, including a
government or political subdivision or an agency or instrumentality thereof.

         "Registration Agreement" means the Registration Rights Agreement
between the Company and QIP dated as of June 19, 1997, as amended by that
amendment dated as of the date hereof (the "Amendment"), in the form attached
hereto as Exhibit B.

         "SEC" means the Securities and Exchange Commission.

         "SEC Documents" means all documents required to have been filed by the
Company with the SEC under Sections 13, 14(a) and 15(d) of the Exchange Act
since its registration of its Common Stock under Section 12(g) of the Exchange
Act.

         "Securities Act" means the Securities Act of 1933, as amended.

                                   ARTICLE II

                                PURCHASE AND SALE

         2.1 Exchange of the Original Note. The Company hereby agrees to issue
the Company's 12% Senior Subordinated Convertible Note in the aggregate
principal amount of $2,000,000, in the form attached hereto as Exhibit C (the
"Exchange Note"), in exchange for the Original Note, subject to the terms and
conditions herein set forth, and QIP hereby agrees to exchange the Original Note
for the Exchange Note, subject to the terms and conditions herein set forth.

         2.2 Closing. The closing (the "Closing") of the issuance of the
Exchange Note in exchange for the Original Note shall take place at the offices
of Akin, Gump, Strauss, Hauer & Feld, L.LP., 590 Madison Avenue, New York, New
York 10022 on the date hereof. All transactions at the Closing shall be deemed
to take place simultaneously. At the Closing:

         (a) QIP shall deliver to the Company the Original Note duly endorsed.

         (b) The Company shall issue and deliver to QIP the Exchange Note duly
registered in the name of QIP.

         (c) The Company shall deliver to an account designated by Akin, Gump,
Strauss, Hauer & Feld, L.L.P., the amounts owed it pursuant to Section 6.2.

         Additionally, in connection with the closing of the transactions
contemplated hereby, the Company and QIP shall enter into the Amendment and each
shall make the closing deliveries required thereby pursuant to Article VI,
Closing Deliveries.


                                       2
<PAGE>

                                   ARTICLE III

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

         The Company hereby represents and warrants to QIP that:

         3.1 Corporate Existence and Power; Capitalization. The Company is a
corporation duly incorporated and validly existing and in good standing under
the laws of the State of Delaware, and has all corporate powers required to
carry on its business as now being conducted. The Company has no subsidiaries.
The Company is authorized or duly qualified to do business as a foreign
corporation and is in good standing in each jurisdiction where the character of
the property owned or leased by it or the nature of its activities make such
qualification necessary. The capitalization of the Company as of the date hereof
is set forth on Schedule 3.1 hereto. The SEC Documents describe accurately all
outstanding stock options, warrants and other rights to purchase any equity
securities of the Company. Except as set forth on Schedule 3.1, there are no
outstanding options, warrants, rights to subscribe to, or securities or rights
convertible or exercisable into or exchangeable for any shares of capital stock
of the Company or arrangements by which the Company is or may become bound to
issue additional shares of its capital stock other than pursuant to the Exchange
Note.

         3.2 Corporate Authorization. The execution, delivery and performance by
the Company of this Agreement, the Exchange Note and the Amendment and the
consummation by the Company of the transactions contemplated hereby and thereby,
are within the Company's corporate power and have been duly authorized by all
necessary corporate action on the part of the Company. This Agreement, the
Exchange Note and the Amendment have each been duly and validly executed by the
Company and constitute the valid and binding agreements of the Company, each
enforceable against the Company in accordance with its terms.

         3.3 Governmental and Court Authorization. The execution, delivery and
performance by the Company of this Agreement, the Exchange Note and the
Amendment require no consent, approval or authorization of, or filing,
registration or qualification with, any governmental body, agency, official,
court or other authority that has not been obtained or made.

         3.4 Non-Contravention. The execution, delivery and performance by the
Company of this Agreement, the Exchange Note and the Amendment do not and will
not (A) contravene or conflict with the Company's certificate of incorporation
or by-laws, or (B) (i) contravene or conflict with or constitute a violation of
any provision of any federal or state law, regulation, judgment, injunction,
order or decree binding upon or applicable to the Company, (ii) require any
consent, approval or other action by any Person or constitute a default under or
give rise to any right of termination, cancellation or acceleration of any right
or obligation of the Company or to a loss of any benefit to which the Company is
entitled under any provision of any agreement, contract, indenture, lease or
other instrument binding upon the Company or any license, franchise, permit or
other similar authorization held by the Company or (iii) result in the creation
or imposition of any Encumbrances on the Exchange Note.


                                       3
<PAGE>

         3.5 SEC Documents; Disclosure Documents. Each report or proxy statement
delivered to QIP is a true and complete copy of such document as filed by the
Company with the SEC. The Company has delivered to QIP all SEC Documents filed
with the SEC since January 1, 1994. The Company has filed in a timely manner all
documents that the Company was required to file with the SEC under Sections 13,
14(a) and 15(d) of the Exchange Act since its registration of its Common Stock
under Section 12(g) of the Exchange Act. As of their respective filing dates,
all SEC Documents filed by the Company with the SEC complied in all material
respects with the Exchange Act or the Securities Act, as applicable. None of the
SEC Documents as of their respective dates contained any untrue statement of a
material fact or omitted to state a material fact required to be stated therein
or necessary to make the statements made therein, in light of the circumstances
under which they were made, not misleading. The financial statements of the
Company included in the SEC Documents (the "Financial Statements") complied as
to form in all material respects with applicable accounting requirements and
with the published rules and regulations of the SEC with respect thereto. The
Financial Statements have been prepared in accordance with generally accepted
accounting principles consistently applied and fairly present the financial
position of the Company at the dates thereof and the results of operations and
cash flows for the periods then ended (subject, in the case of unaudited
statements, to normal, recurring adjustments).

         3.6 Due Authorization and Validity of the Exchange Note. The Exchange
Note has been duly authorized and when delivered against payment therefor as
contemplated hereby will be validly issued, fully paid and non-assessable and
will not be subject to any preemptive or similar rights. The Common Stock
issuable upon conversion of the Exchange Note has been reserved for issuance
and, when issued upon conversion of the Exchange Note, will be validly issued,
fully paid and non-assessable and will not be subject to any preemptive or
similar rights.

         3.7 Absence of Certain Changes. Except for liquidity issues which have
been fully disclosed by the Company to QIP, in connection with QIP's
representation on the Board of Directors of the Company or otherwise, since
September 30, 1997, there has been no Material Adverse Effect.

         3.8 Litigation. Except as set forth in the SEC Documents or as set
forth in Schedule 3.8, there is no action, suit, investigation or proceeding
pending against, or to the knowledge of the Company threatened against or
affecting, the Company or any of their respective properties before any court or
arbitrator or any governmental body, agency, official or authority which (i)
could reasonably be expected to have a Material Adverse Effect or (ii) in any
manner would enjoin, alter, call into question, affect or delay the transactions
contemplated by this Agreement.

         3.9 FIRPTA. The Company is not a "United States real property holding
corporation" within the meaning of Section 896(c)(2) of the Internal Revenue
Code of 1986, as amended.

         3.10 No Undisclosed Liabilities. The Company has no liabilities or
obligations not disclosed in the SEC Documents and those incurred in the
ordinary course of the Company's business since September 30, 1997.

                                       4
<PAGE>

         3.11 No Brokers. The Company has taken no action which would give rise
to any claim by any Person for brokerage commissions, finders' fees or similar
payments by QIP relating to this Agreement or the transactions contemplated
thereby.

         3.12 Disclosure. No representation, warranty or statement made by the
Company in this Agreement, the Registration Agreement or any agreement,
certificate, statement or document furnished by or on behalf of the Company in
connection herewith or therewith contains any untrue statement of a material
fact or omits to state a material fact necessary in order to make the statements
contained herein or therein, in light of the circumstances under which they were
made, misleading.

         3.13 Transactions with Affiliates. Except as set forth in the SEC
Documents or as set forth in Schedule 3.13, there are no business relationships
or related party transactions that would be required to be disclosed therein by
Item 404 of Regulation S-K of the SEC that are not so disclosed.

         3.14 Intellectual Property. Except as disclosed in the SEC Documents or
Schedule 3.14 hereto:

                  (a) the Company owns, possesses, controls or is licensed
under, such patents (or applications therefor), trademarks and service marks
(and registrations thereof), copyrights (and registrations thereof), utility
models, inventions, know-how, trade secrets, and other intellectual property
(all of aforesaid referred to as "Necessary Intellectual Property Rights") as
are necessary for the operation of the business now conducted or operated by the
Company, including but not limited to the property listed on Schedule 3.14;

                  (b) to the knowledge of Company all Necessary Intellectual
Property Rights are valid and subsisting and the Company is unaware of any fact
which, individually or in the aggregate, would materially detrimentally affect
the validity, ownership or enforceability of the Necessary Intellectual Property
Rights;

                  (c) the Company is not aware of, or has not received notice
of, any asserted right with respect to any of the Necessary Intellectual
Property Rights which, if determined unfavorably with respect to the interests
of the Company would have a Material Adverse Effect;

                  (d) the Company is unaware of any patent, trademark, copyright
or other intellectual property license to which the Company is a party as
licensor or licensee, which has been revoked, terminated or canceled, or which
is likely or subject to being revoked, terminated or canceled, where the
revocation, cancellation or termination would have a Material Adverse Effect;
and

                  (e) the Company has not been notified or advised, has not been
the recipient of a claim, or is otherwise not aware, that any activity of the
Company infringes or violates the patent, trademark, copyright or other
intellectual property right of any third party.

                                       5

<PAGE>

                                   ARTICLE IV


                      REPRESENTATIONS AND WARRANTIES OF QIP

         QIP hereby represents and warrants, to the Company as of the date
hereof that:

         4.1 Organization; Existence. QIP is duly organized, validly existing
and in good standing under the laws of the jurisdiction of its incorporation,
and QIP has all necessary corporate powers and all material governmental
licenses, authorizations, consents and approvals required to carry on its
business as now being conducted.

         4.2 Corporate Authorization. The execution, delivery and performance by
QIP of this Agreement and the Amendment and the consummation by QIP of the
transactions contemplated hereby and thereby are within QIP's corporate powers
and have been duly authorized by all necessary corporate or other action on the
part of QIP.

         4.3 Governmental and Court Authorization. The execution, delivery and
performance by QIP of this Agreement and the Amendment require no consent,
approval or authorization of, or filing, registration or qualification with, any
governmental body, agency, official, court or authority that has not been
obtained or made.

         4.4 Non-Contravention. The execution, delivery and performance by QIP
of this Agreement and the Amendment do not and will not (A) contravene or
conflict with the certificate of incorporation or bylaws of it or (B) contravene
or conflict with or constitute a violation of any provision of any law,
regulation, judgment, injunction, order or decree binding upon or applicable to
it.

         4.5      Purchase for Investment; Legends.

         (a) The Exchange Note is being acquired for its own account, and not
with a view to public distribution in violation of the Securities Act.
Notwithstanding the foregoing, QIP shall have the right at all times to sell or
otherwise dispose of all or any part of the Exchange Note or the Common Stock
issuable upon conversion of the Exchange Note pursuant to a registration, or
exemption therefrom, under the Securities Act. It is an "accredited investor" as
defined in Rule 501 under the Securities Act.

         (b) Upon original issuance thereof, and until such time as the same is
no longer required under the applicable requirements of the Securities Act, the
Exchange Note (and all Common Stock issued in exchange therefor or substitution
thereof) shall bear the following legend:

         THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
         AS AMENDED, AND MAY NOT BE SOLD, ASSIGNED, OR OTHERWISE TRANSFERRED OR
         DISPOSED OF EXCEPT IN COMPLIANCE WITH SUCH ACT AND THE APPLICABLE RULES
         AND REGULATIONS THEREUNDER.



                                       6
<PAGE>

                                    ARTICLE V


                                    COVENANTS

         5.1 Registration. If and to the extent required by the Registration
Agreement, the Company agrees that it will register the Common Stock issuable
upon conversion of the Exchange Note for sale under federal and state securities
laws in accordance with the Registration Agreement.

         5.2 Transactions with Affiliates. So long as the Exchange Note is
outstanding, without QIP's written consent, the Company shall not conduct any
business or enter into any transaction or series of similar transactions with
any Affiliate of the Company or any legal or beneficial owner of 5% or more of
any class of capital stock of the Company with an affiliate of such owner unless
the terms of such business, transaction or series of transactions are set forth
in writing and as favorable to the Company as terms that would be obtainable at
the time for a comparable transaction or series of similar transactions in arm's
length dealings with an unrelated third person. For purposes of this Section
5.2, the Buyer shall not be deemed to be an Affiliate. Notwithstanding the
foregoing, so long as the Exchange Note is outstanding, the Company shall not
make, or cause any other party to make, any loans to any shareholders of the
Company. The Company further agrees that it will not enter into any transaction
with any Affiliate or legal or beneficial owner of 5% or more of any class of
capital stock of the Company or an Affiliate or family member of such person
unless the terms of such transaction have been presented to and approved by the
Board of Directors of the Company.

         5.3 Restricted Payments. So long as the Exchange Note is outstanding,
the Company will not, without the prior written consent of QIP, (i) declare or
pay any dividend or make any other payment or distribution on account of any
capital stock of the Company, (ii) purchase redeem or otherwise acquire or
retire for value any capital stock of the Company or (iii) except for
indebtedness set forth on Schedule 5.3 that the Company is already committed to
retiring, purchase, redeem, defease or otherwise acquire or retire for value any
indebtedness that is subordinate or pari passu to the Note (each a "Restricted
Payment").




                                   ARTICLE VI

                               CLOSING DELIVERIES

         Simultaneously with the execution and delivery of this Agreement, the
following deliveries shall be made:

         6.1 Amendment to Registration Rights Agreement. QIP and the Company
shall enter into the Amendment.

                                       7


<PAGE>

        6.2 Reimbursement. The Company shall have reimbursed QIP for its
out-of-pocket costs and expenses incurred in connection with the closing of the
transactions contemplated by this Agreement and the Amendment.

         6.3 Officer's Certificate. The Company shall deliver a certificate from
its Secretary attesting to the authenticity of the following documents: (i) the
certificate of incorporation of the Company; (ii) the by-laws of the Company;
and (iii) the resolutions of the Company authorizing the issuance of the
Exchange Note and the exchange of the Original Note therefore and the
reservation of shares of Common Stock issuable upon conversion of the Exchange
Note.

         6.4 Opinion. The Company shall cause Atlas, Pearlman, Trop & Borkson,
P.A., to deliver to QIP an opinion in the form attached hereto as Exhibit C.


                                   ARTICLE VII


                            SURVIVAL; INDEMNIFICATION

         7.1 Survival. The covenants, agreements, representations and warranties
of the parties hereto contained in this Agreement or in any certificate or other
writing delivered pursuant hereto or in connection herewith shall survive the
Closing.

         7.2 Indemnification. The Company shall indemnify and hold harmless QIP
(and its directors, officers, employees, Affiliates and permitted assigns) from
and against all losses, liabilities, charges, damages, deficiencies, costs and
expenses (including interest, penalties and attorney's fees and disbursements)
(collectively, "Loss"), sustained or incurred by QIP based upon or arising out
of (i) any inaccuracy or defect or breach of any representation or warranty by
the Company in this Agreement or (ii) any failure by the Company to perform or
observe any term or covenant of this Agreement or the Registration Agreement
required to be performed by it, and will reimburse QIP for any reasonable legal
or other expenses incurred by it in connection with the investigating or
defending of any Loss.


                                  ARTICLE VIII

                                  MISCELLANEOUS

         8.1 Notices. All notices, requests and other communications to any part
hereunder shall be in writing (including telecopy or similar writing) and shall
be effective upon receipt and shall be given, if to QIP, to:

                                    Quantum Industrial Partners LDC
                                    c/o Curacao Corporation Company, N.V.
                                    Kaya Flamboyan
                                    Willemstad, Curacao
                                    Netherlands, Antilles

                                       8
<PAGE>

                                    Fax: 599-9-322-001

                                    with a copy to:

                                    Soros Fund Management
                                    888 Seventh Avenue
                                    New York, New York  10106
                                    Attention: Michael Neus
                                    Fax: (212) 664-0544

                                    and

                                    Akin, Gump, Strauss, Hauer & Feld, L.L.P.
                                    590 Madison Avenue
                                    New York, New York  10022
                                    Attention: Edward D. Sopher
                                    Fax: (212) 872-1002

                                    If the Company to:

                                    T/F Purifiner, Inc.
                                    3036 High Ridge Road
                                    Suite 100
                                    Boyton Beach, Florida  33426
                                    Attention:  Keith T.J. Hart
                                    Fax:  (561) 547-4025


                                    with a copy to:

                                    Atlas, Pearlman, Trop & Borkson, P.A.
                                    New River Center - Suite 1900
                                    200 East Los Olas Boulevard
                                    Fort Lauderdale, Florida  33301
                                    Attention:  Jim Schneider
                                    Fax:  (954) 523-1952


or to such other address or Person as any of the parties may designate by 
written notice hereunder.

         8.2      Amendments: No Waivers.

         (a) Any provision of this Agreement may be amended or waived if, and
only if, such amendment or waiver is in writing and signed, in the case of an
amendment, by QIP and the Company, or in the case of a waiver, by the party
against whom the waiver is to be effective.


                                       9
<PAGE>

         (b) No failure or delay by either party in exercising any right, power
or privilege hereunder shall operate as a waiver thereof nor shall any single or
partial exercise thereof preclude any other or further exercise thereof or the
exercise of any other right, power or privilege. The rights and remedies herein
provided shall be cumulative and not exclusive of any rights or remedies
provided by law;

         8.3 Expenses. All reasonable costs and expenses incurred by QIP in
connection with this Agreement and the Amendment shall be paid by the Company.

         8.4 Successors and Assigns. The provisions of this Agreement shall be
binding upon and inure to the benefit of the parties hereto and their respective
successors and assigns; provided that no party may assign, delegate or otherwise
transfer any of its rights or obligations under this Agreement without the
consent of the other parties hereto.

         8.5 Governing Law. THIS AGREEMENT SHALL BE CONSTRUED IN ACCORDANCE WITH
AND GOVERNED BY THE LAW OF THE STATE OF NEW YORK.

         8.6 Counterparts; Effectiveness. This Agreement may be signed in any
number of counterparts, each of which shall be an original, with the same effect
as if the signatures thereto and hereto were upon the same instrument. This
Agreement shall become effective when each party hereto shall have received a
counterpart hereof signed by the other parties hereto.

         8.7 Entire Agreement. This Agreement, the Exchange Note and the
Amendment constitute the entire agreement between the parties with respect to
the subject matter hereof and supersede all prior agreements, understandings and
negotiations, both written and oral, between the parties with respect to the
subject matter of this Agreement.

         8.8 Jurisdiction. Any suit, action or proceeding seeking to enforce any
provision of, or based on any matter arising out of or in connection with, this
Agreement or the transactions contemplated hereby may be brought against either
of the parties in the courts of the State of New York in New York City, or, if
it has or can acquire jurisdiction, in the United States District Court for the
Southern District of New York, and each of the parties hereby consents to the
jurisdiction of such courts (and of the appropriate appellate courts) in any
such suit, action or proceeding and waives any objection to venue laid therein.
Process in any such suit, action or proceeding may be served on any party
anywhere in the world, whether within or without the State of New York.

         8.9 Captions. The captions herein are included for convenience of
reference only and shall be ignored in the construction or interpretation
hereof.



                                       10
<PAGE>


         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed by their respective authorized signatories as of the day and year
first above written.

                         QUANTUM INDUSTRIAL PARTNERS LDC


                                            By:_________________________
                                                  Name:
                                                  Title:


                                            T/F PURIFINER, INC.


                                            By:_________________________
                                                  Name:
                                                  Title:



                                       11



                  THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT
OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS AND MAY NOT BE SOLD, ASSIGNED
OR OTHERWISE TRANSFERRED OR DISPOSED EXCEPT IN COMPLIANCE WITH SUCH ACT AND THE
APPLICABLE RULES AND REGULATIONS THEREUNDER.

US $2,000,000                                            New York, New York
                                                           January 26, 1998

                               T/F PURIFINER, INC.

                12% SENIOR SUBORDINATED CONVERTIBLE NOTE DUE 2003

                  T/F Purifiner, Inc., a Delaware corporation (the "Issuer"),
for value received hereby promises to pay to Quantum Industrial Partners LDC or
registered assigns (the "Holder") the principal amount of TWO MILLION DOLLARS
($2,000,000) plus any accrued and unpaid interest at such place or such bank
account in the United States of America as the Holder may from time to time
direct on January 1, 2003 in such coin or currency of the United States of
America as at the time of payment shall be legal tender for the payment of
public and private debts.

                  This Security is issued pursuant to a Note Exchange Agreement
dated as of January 26, 1998 by and between the Issuer and the Holder (the
"Exchange Agreement"). This Security is transferable and assignable at any time,
in whole or in part, to one or more purchasers or other persons. The Issuer
agrees to issue from time to time replacement Securities in the form hereof to
facilitate such transfers and assignments. In addition, after delivery of an
indemnity in form and substance satisfactory to the Issuer, the Issuer also
agrees to issue replacement Securities for the Security which have been lost,
stolen, mutilated or destroyed.

                  The Issuer shall keep at its principal office a register (the
"Register") in which shall be entered the names and addresses of the registered
holder(s) of the Security and particulars of all transfers of the Security. The
ownership of the Security shall be proven by the Register. For the purpose of
paying interest and principal on the Security, the Issuer shall be entitled to
rely on the name(s) and address(es) in the Register and notwithstanding anything
to the contrary contained in this Security, no Event of Default (as defined
below) shall occur under Section 6 if payment of principal is made in accordance
with the names and addresses and particulars contained in the Register.

                  No provision of this Security shall alter or impair the
obligations of the Issuer, which are absolute and unconditional, to pay the
principal of and interest on this Security at the place, times, rate, and in the
currency, herein prescribed.


<PAGE>

1.       Principal and Interest

                  The principal of this Security shall bear interest at the rate
of 12% per annum (the "Interest Rate") which shall accrue from the most recent
Interest Payment Date to which interest has been paid on this Security, or if no
interest has been paid on this Security from December 19, 1997 until payment in
full of the principal amount has been made and be payable in cash quarterly on
April 1, July 1, October 1 and January 1 of each year (an "Interest Payment
Date"), commencing on April 1, 1998, to the Holder hereof until the principal
amount is paid or made available for payment. The interest so payable, and
punctually paid or duly provided for, on any Interest Payment will be paid to
the Holder of the Security at the close of business on the Record Date for the
interest payable on such Interest Payment Date. The "Record Date" for any
interest payment is the close of business on March 15, June 15, September 15 or
December 15, as the case may be, whether or not a Business Day, immediately
preceding the Interest Payment Date on which such Interest is payable; provided,
however, that at the option of the Company, on any Interest Payment Date,
interest may, in lieu of being paid in cash, accrue and be added to the
principal balance of this Security. "Business Day" means any day except a
Saturday, Sunday or other day on which commercial banks in the City of New York
are authorized by law to close.

                  Any amounts that have become due and payable hereunder and
remain unpaid by the Issuer shall accrue interest thereafter until payment in
full of such amount at the rate of fifteen percent (15%) (the "Default Rate")
per annum and shall be payable upon demand by the Holder.

                  Interest, whether at the Interest Rate or the Default Rate,
will be computed on the basis of a fraction, the denominator of which is 360 and
the numerator of which is the actual number of days elapsed from the date such
interest becomes due and payable.

                  Each of the Interest Rate and the Default Rate shall be
effective both before and after any judgment may be rendered in a court of
competent jurisdiction, provided, however, that if either the Interest Rate or
Default Rate is deemed to be in excess of the amount permitted to be charged by
the Issuer under applicable laws, the Holder shall be entitled to collect an
Interest Rate or Default Rate, as the case may be, only at the highest rate
permitted by law, and any interest collected by the Holder in excess of such
lawful amount shall be deemed a payment in reduction of the Principal Amount
then outstanding under this Security and shall be so applied.

2.       Subordination

                  The payment obligations evidenced by this Security shall be
subordinate to any indebtedness of the Issuer for cash advanced by any bank or
other financial institution ("Bank Debt") but shall rank senior to all other
indebtedness of the Issuer. The Issuer shall not issue, directly or indirectly,
any indebtedness which is senior to the indebtedness evidenced by this Security
unless such indebtedness is Bank Debt.


                                       2
<PAGE>

3.       Redemption

                  A. Optional Redemption. This Security will be redeemable at
the option of the Issuer at any time, in whole or in part, upon not less than
thirty (30) nor more than sixty (60) days' notice, at 100% principal amount
thereof, plus accrued and unpaid interest.

                  At least thirty (30) days but not more than sixty (60) days
before a redemption date, the Issuer shall send a notice of redemption,
first-class mail, postage prepaid, facsimile with answer back and courier to
follow to the Holder(s) of this Security to be redeemed at the address(es) of
the Holder as they appear in the Register.

                  If this Security is redeemed subsequent to a Record Date with
respect to any Interest Payment Date specified above and on or prior to such
Interest Payment Date, then any accrued interest will be paid on such Interest
Payment Date to the Holder of the Security on such Record Date.

                  B. Mandatory Redemption. The Security will be redeemable at
the option of the Holder(s) in whole or in part at any time on or after the
earlier of (i) January 1, 2001 and (ii) the date on which the Issuer raises cash
proceeds aggregating at least $10 million from any transaction or series of
transactions involving the sale of debt, equity or assets (a "Put Date") upon
not less than five (5) business days written notice to the Issuer at 100%
principal amount thereof, plus accrued and unpaid interest. The Issuer covenants
and agrees that it will immediately (but in any event within one (1) Business
Day) advise the Holder of the occurrence of any Put Date described in clause
(ii) above.

4.       Affirmative Covenants of Issuer

                  A. Visits and Inspections. The Issuer will permit the Holder,
upon reasonable notice, to (i) visit and inspect the properties of the Issuer
during business hours, (ii) inspect and make extracts from and copies of its
books and records, and (iii) discuss with and obtain information from its
principal officers, its business, assets, liabilities, financial position,
results of operations and business prospects. The Issuer will also permit the
Holder to discuss with its respective auditors its businesses, assets,
liabilities, financial positions, results of operations and business prospects.

                  B. Reporting. The IssuerCD will make available or cause to be
made available to each Holder as soon as practicable (except to the extent such
Holder specifically requests otherwise):

                           (i)      all annual, quarterly and periodic reports
                                    prescribed by Sections 13, 14 and 15(d) of
                                    the Exchange Act (whether or not the Issuer
                                    is subject to such requirements);

                           (ii)     all reports furnished to the Issuer's board 
                                    members and securityholders;

                                       3

<PAGE>

                           (iii)    any reports (including management reports)
                                    submitted to the Issuer by the Issuer's
                                    independent public accountants

                           (iv)     a copy of the annual budget for the Issuer
                                    (in no event later than 60 days after the
                                    commencement of each fiscal year) and any
                                    material amendment thereto;

                           (v)      notice of the commencement of and progress
                                    of any material proceedings or
                                    investigations by or before any governmental
                                    body, court or arbitrator against, or to the
                                    extent known to the Issuer, in any other way
                                    relating adversely to the Issuer;

                           (vi)     notice of any material adverse change with
                                    respect to the business, financial position,
                                    results of operations or prospects of the
                                    Issuer;

                           (vii)    notice and details of any default or the
                                    occurrence or non-occurrence of any event
                                    which constitutes, or which with the passage
                                    of time or giving of notice or both would
                                    constitute a default by the Issuer under any
                                    material agreement other than this Agreement
                                    to which the Issuer is party or by which any
                                    of its properties may be bound;

                           (viii)   such other information or reports relating
                                    to the Issuer as the Holder may reasonably
                                    request.

                  C. Reservation and Issuance of Common Stock. The Issuer
covenants that it will at all times reserve and keep available out of its
authorized shares of Common Stock par value $.001 per share (the "Common
Stock"), free from preemptive rights, solely for the purpose of issue upon
conversion of the Securities as herein provided, such number of shares of the as
shall then be issuable upon the conversion of all outstanding shares of the
Securities into Common Stock. The Issuer covenants that all shares of Common
Stock which shall be so issuable shall, when issued, be duly and validly issued
and fully paid and non-assessable.

                  D Compliance With Governmental Requirements. The Issuer
covenants that if any shares of Common Stock required to be reserved for
purposes of conversion of Securities hereunder require registration with or
approval of any governmental authority under any Federal or State law, or any
national securities exchange, before such shares may be issued upon conversion,
the Issuer will use its best efforts to cause such shares to be duly registered
or approved, as the case may be.

                  E. Notification of Certain Matters. The Issuer shall notify
the Holders promptly (and in any event no later than 10 days prior to any
applicable record date) of any proposal for the authorization or issuance of
rights or other distributions to

                                       4

<PAGE>

securityholders, any subdivision, combination or reclassification affecting the
capital stock, any merger or consolidation affecting the Issuer, the voluntary
or involuntary dissolution, liquidation or winding-up of the Issuer or any sale
or transfer of any significant portion of the Issuer's assets.

5.       Negative Covenants

                  A. Restricted Payments. Without the written consent of a
majority of holders of an aggregate principal amount of the Securities
outstanding (the "Majority Holders"), the Issuer will not make to any Person (i)
any dividend or other payment or distribution on any capital stock of the
Issuer; (ii) any payment on account of the purchase, redemption, retirement or
other acquisition of any shares of the Issuer's capital stock any option,
warrant or other right to acquire shares of the Issuer's capital stock, or (iii)
any defeasance, redemption, repurchase or other acquisition or retirement for
value prior to scheduled maturity of any indebtedness ranked pari passu or
subordinate in right of payment to the Securities and having a maturity date
subsequent to the maturity of the Securities. "Person" means an individual,
corporation, limited liability company, partnership, association, trust or other
entity or organizations, including a government or political subdivision or an
agency or instrumentality thereof.

                  B. Transactions with Affiliates. Without the written consent
of the Majority Holders, the Issuer shall not conduct any business or enter into
any transactions or series of similar transactions with an Affiliate of the
Issuer or any legal or beneficial owner of 5% or more of any class of capital
stock of the Issuer with an Affiliate of such owner unless the terms of such
business transaction or series of transactions are set forth in writing and as
favorable to the Issuer as terms that would be obtainable at the time for a
comparable transaction or series of similar transactions in arm's length
dealings with an unrelated third person. For purposes of this paragraph B,
Quantum Industrial Partners LDC shall not be deemed to be and Affiliate.
Notwithstanding the foregoing, the Issuer shall not make, or cause any other
party to make, any loans to any shareholders of the Company. The Company further
agrees that it will not enter into any transaction with any Affiliate or any
legal or beneficial owner of 5% or more of any class of capital stock of the
Company or an Affiliate or family member of such person unless the terms of such
transaction have been presented to and approved by the Board of Directors of the
Issuer. "Affiliate" of any Person means any other Person directly or indirectly
controlling or controlled by or under direct or indirect common control with
such Person. For the purposes of this definition, "control" when used with
respect to any Person means the possession, directly or indirectly, of the power
to direct or cause the direction of the management and policies of such Person,
whether through the ownership of voting securities, by contract or otherwise;
and the terms "controlling" and "controlled" have meanings correlative to the
foregoing.

                  C. Amendment to Certain Documents. The Issuer shall not enter
into any amendment of, or agree to or accept or consent to any waiver of any of
the material 


                                       5
<PAGE>

provisions of its certificate of incorporation (including any certificate of
designation) or By-laws.

6.       Default

                  The occurrence of any of the following events or conditions
shall constitute an event of default (each an "Event of Default") with respect
to the Issuer of this Security:

                  (a) Any amounts due under this Security are not paid on the
         day after the due date therefore.

                  (b) The Issuer or any subsidiary of the Issuer (i) shall
         commence any case, proceeding or other action (A) under any existing or
         future law of any jurisdiction, domestic or foreign, relating to
         bankruptcy, insolvency, reorganization, arrangement, adjustment,
         winding-up, liquidation, dissolution, composition or other relief with
         respect to it or its debts, or (B) seeking appointment of a receiver,
         trustee, custodian or other similar official for it or for all or any
         substantial part of its assets, or Issuer shall make a general
         assignment for the benefit of its creditors; or (ii) there shall be
         commenced against Issuer any case, proceeding or other action of a
         nature referred to in clause (i) above which (A) results in the entry
         of an order for relief or any such adjudication or appointment or (B)
         remains undismissed, undischarged or unbonded for a period of ninety
         (90) days.

                  (c) The Issuer shall fail to perform any agreement or covenant
         on its part contained herein or in the Exchange Agreement.

                  (d) Any default by the Issuer or any subsidiary with respect
         to any indebtedness (whether existing or hereinafter created) which
         would permit the holder thereof to declare such indebtedness to be due
         and payable prior to its stated maturity.

                  Upon the occurrence and during the continuance of an Event of
Default, the Holder will have the option, upon notice to the Issuer, of
declaring the principal amount hereunder together with unpaid accrued interest
thereon to be immediately due and payable.

                  The Issuer agrees to pay on demand all of the Holder's costs
and expenses, including without limitation reasonable attorneys' fees, in
connection with the collection of any sums due the Holder, the enforcement or
protection of its rights hereunder, any amendment to this Security or any waiver
hereunder or under the Exchange Agreement.

                  No failure on the part of the Holder or other holders hereof
to exercise any right or remedy hereunder, whether before or after the happening
of a default shall constitute a waiver thereof, and no waiver of any past
default shall constitute waiver of 


                                       6
<PAGE>

any future default or of any acceptance of a past due installment, or indulgence
granted from time to time shall be construed to be a waiver of the right to
insist upon prompt payment thereafter or to impose late charges retroactively or
prospectively, or shall be deemed to be a novation of this Security or as a
reinstatement of the debt evidenced hereby or as a waiver of such right or
acceleration or any other right, or be construed so as to preclude the exercise
of any right which the Holder may have, whether by the laws of the State of New
York, by agreement or otherwise; and the Issuer hereby expressly waives the
benefit of any statute or rule of law or equity which would produce a result
contrary to or in conflict with the foregoing.

7.       Conversion

                  Subject to and upon compliance with the provisions of this
Section, the principal amount of this Security, or any portion thereof may, at
any time and at or before the close of business on January 1, 2003, or
thereafter if any Event of Default shall occur and be continuing, be converted
into duly authorized, validly issued, fully-paid and nonassessable shares of
Common Stock at $2.75 per share (the "Conversion Price"), or, in case an
adjustment in the Conversion Price and the securities or other property issuable
upon conversion has taken place pursuant to Section 8 hereof, then at the
applicable Conversion Price and in such securities or other property as so
adjusted, upon surrender of the Security or Securities, the principal amount of
which is so to be converted, to the Issuer at any time during usual business
hours at the Issuer's offices, accompanied by a written notice of election to
convert as provided in the form attached hereto and, if so required by the
Issuer, by a written instrument or instruments of transfer in form satisfactory
to the Issuer duly executed by the registered holder or his attorney duly
authorized in writing.

                  No payment or adjustment will be made for dividends on any
Common Stock except as provided in Section 8 hereof. On conversion of a
Security, that portion of any interest accrued and unpaid interest attributable
to the period from December 19, 1997 to the Conversion Date with respect to the
converted Security shall not be canceled, extinguished or forfeited, but rather
shall be deemed to be paid in full to the Holder thereof through delivery of the
Common Stock, in exchange for the Security being converted pursuant to the
provisions hereof. If the Holder converts more than one Security at the same
time, the number of shares of Common Stock issuable upon the conversion shall be
based on the total Principal Amount of the Securities converted.

                  As promptly as practicable after the surrender, as herein
provided, of any Security or securities for conversion, the Issuer shall deliver
or cause to be delivered at its said office or agency to or upon the written
order of the holder of the Security or securities so surrendered a certificate
or certificates representing the number of duly authorized, validly issued,
fully-paid and nonassessable shares of Common Stock, into which such Security or
Securities may be converted in accordance with the provisions of Section 7.
Prior to delivery of such certificate or certificates, the Issuer shall require
a written notice at its said office or agency from the Holder of the Security or
securities so 

                                       7
<PAGE>

surrendered stating that the holder irrevocably elects to convert such Security
or Securities, or, if less than the entire principal amount thereof is to be
converted, stating the portion thereof to be converted. Such notice shall also
state the name or names (with address and social security or other taxpayer
identification number) in which said certificate or certificates are to be
issued. Such conversion shall be deemed to have been made at the time that such
Security or Securities shall have been surrendered for conversion and such
notice shall have been received by the Issuer, the rights of the holder of such
Security or Securities as a Securityholder shall cease at such time, the person
or persons entitled to receive the shares of Common Stock, upon conversion of
such Security or Securities shall be treated for all purposes as having become
the record holder or holders of such shares of Common Stock at such time and
such conversion shall be at the Conversion Price in effect at such time. In the
case of any Security which is converted in part only, upon such conversion, the
Issuer shall execute and deliver to the holder thereof, as requested by such
holder, a new Security or securities of authorized denominations in aggregate
principal amount equal to the unconverted portion of such Security.

8.       Adjustment of Conversion Price

                  The Conversion Price in effect at any time shall be subject to
adjustment from time to time upon the happening of certain events, as follows:

                           (i) In case the Issuer shall at any time after the
                  date hereof (1) declare or pay a dividend in shares of Common
                  Stock or make a distribution of Common Stock, (2) subdivide
                  its outstanding shares of Common Stock, (3) combine its
                  outstanding shares of Common Stock into a smaller number of
                  shares of Common Stock or (4) issue any shares of its capital
                  stock in a reclassification of Common Stock (including any
                  such reclassification in connection with a consolidation or
                  merger in which the Issuer is the continuing entity), the
                  number of shares of Common Stock purchasable upon conversion
                  immediately prior thereto shall be adjusted so that the Holder
                  of the Securities shall be entitled to receive the number
                  shares of Common Stock or other securities of the Issuer which
                  he would have owned or have been entitled to receive after the
                  happening of any of the events described above, had conversion
                  occurred immediately prior to the happening of such event or
                  any record date with respect thereto. An adjustment made
                  pursuant to this paragraph (i) shall become effective
                  immediately after the effective date of such event retroactive
                  to the record date, if any, for such event.

                           (ii) In case the Issuer shall at any time after the
                  date hereof issue rights, options or warrants to all holders
                  of its outstanding Common Stock entitling them to subscribe
                  for or purchase shares of Common Stock at a price per share
                  which is lower at the record date mentioned below than the
                  higher (A) of the market price per share of the Common Stock
                  (as 

                                       8

<PAGE>

                  defined in Section (v) below) and (B) the Conversion Price,
                  then the number of shares of Common Stock thereafter
                  purchasable upon conversion shall be determined by multiplying
                  the number of shares of Common Stock theretofore purchasable
                  upon conversion by a fraction, of which the numerator shall be
                  the number of shares of Common Stock outstanding on the record
                  date for determining stockholders entitled to receive such
                  rights, options or warrants plus the number of additional
                  shares of Common Stock offered for subscription or purchase,
                  and of which the denominator shall be the number of shares of
                  Common Stock outstanding on the record date for determining
                  stockholders entitled to receive such rights, options or
                  warrants plus the number of shares which the aggregate
                  offering price of the total number of shares of Common Stock
                  so offered would purchase at the current market price per
                  share of Common Stock at such record date. Such adjustment
                  shall be made whenever such rights, options or warrants are
                  issued, and shall become effective as of immediately after the
                  record date for the determination of stockholders entitled to
                  receive such rights, options or warrants.

                           (iii) In case the Issuer shall at any time after the
                  date hereof distribute to all holders of its shares of Common
                  Stock evidences of its indebtedness or assets (including
                  securities and cash dividends not paid out of funds legally
                  available for the payment of dividends under the laws of the
                  jurisdiction of incorporation of the Issuer or not made in the
                  ordinary course of business), but excluding dividends or
                  distributions referred to in Section (i) above or rights or
                  options or warrants referred to in Section (ii) above, then in
                  each case the number of shares of Common Stock thereafter
                  purchasable upon conversion shall be determined by multiplying
                  the number of shares of Common Stock theretofore purchasable
                  upon conversion by a fraction, of which the numerator shall be
                  then current market price per share of Common Stock (as
                  defined in Section (v) below) on the date of such
                  distribution, and of which the denominator shall be then
                  current market price per share of Common Stock, less then fair
                  value (as reasonably determined in good faith by the Board of
                  Directors of the Issuer, whose reasonable determination shall
                  be conclusive) of the portion of the assets or evidences of
                  indebtedness so distributed or of such subscription rights or
                  securities or warrants applicable to one share of Common
                  Stock. Such adjustment shall be made whenever any such
                  distribution is made, and shall become effective on the date
                  of distribution retroactive to the record date for the
                  determination o shareholders entitled to receive such
                  distribution.

                           (iv) In case the Issuer shall at any time after the
                  date hereof issue shares of Common Stock, or rights, options,
                  warrants or convertible or exchangeable securities containing
                  the right to subscribe for or purchase shares of Common Stock
                  (excluding (A) shares, rights, options, warrants 


                                       9
<PAGE>

                  or convertible or exchangeable securities issued in any of the
                  transactions described in Sections (i) through (iii) above and
                  (B) 42,650 options contemplated to be issued to G & S
                  Technologies, Inc., as described in Schedule 3.8 to the
                  Exchange Agreement, a price per share of Common Stock (as
                  determined in accordance with Section (v) below) that is lower
                  than the higher of (A) the current market value per share of
                  Common Stock (as determined in accordance with Section (v)
                  below) on the date of such sale or issuance or on the date of
                  the agreement for such sale or issuance (whichever is more)
                  and (B) the Conversion Price, then in each case the number of
                  shares of Common Stock thereafter purchasable upon conversion
                  shall be increased by multiplying the number of shares of
                  Common Stock theretofore purchasable upon the conversion by a
                  fraction, the numerator of which shall be (I) the total number
                  of shares of Common Stock issuable in connection with such
                  sale and issuance, and the denominator of which shall be (II)
                  the number of shares of Common Stock that the aggregate
                  consideration received (determined as provided below) for such
                  sale or issuance would purchase at the higher of the prices
                  referred to in (A) and (B) above. Such adjustment shall be
                  made successively whenever such an issuance is made. For the
                  purposes of such adjustments, the shares of Common Stock that
                  the holder of such rights, options, warrants, or convertible
                  or exchangeable securities shall be entitled to subscribe for
                  or purchase shall be deemed to be issued and outstanding as of
                  the date of such sale and issuance and the consideration
                  received by the Issuer therefor shall be deemed to be the
                  consideration received by the Issuer, plus the consideration
                  or premiums stated in such rights, options, warrants or
                  convertible or exchangeable securities to be paid for the
                  shares of Common Stock covered thereby. In case the issuer
                  shall sell and issue shares of Common Stock or rights,
                  options, warrants or convertible or exchangeable securities
                  containing the right to subscribe for or purchase Common
                  Stock, for a consideration consisting, in whole or in part, of
                  property other than cash or its equivalent, then in
                  determining the "price per share of Common Stock" and the
                  "consideration received by the Issuer" for purposes of the
                  first sentence of this Section (iv), the Board of Directors of
                  the Issuer shall determine, on a reasonable basis and in good
                  faith, the fair value of such property. In case the Issuer
                  shall sell and issue rights, options, warrants or convertible
                  or exchangeable securities containing the right to subscribe
                  for or purchase shares of Common Stock together with one or
                  more other securities as part of a unit at a price per unit,
                  then in determining the "price per share of Common Stock" and
                  the consideration received by the Issuer for purposes of the
                  first sentence of this Section (iv), the Board of Directors
                  shall determine, on a reasonable basis and in good faith, the
                  fair value of the rights, options, warrants or convertible or
                  exchangeable securities then being sold as part of such unit.

                                       10
<PAGE>

                           (v) For the purpose of any computation under sections
                  (ii) through (iv) above, the current market price per share of
                  Common Stock at any date shall be the average of the current
                  market value of Common Stock for the 20 consecutive trading
                  days commencing 30 trading days prior to such date; provided,
                  that, if the Common Stock is not then publicly traded, the
                  current market price per share shall be the average of the
                  market value of the Common Stock of the last 20 consecutive
                  trading days prior to the last day of trading; provided,
                  however that such date is not earlier than 180 days prior to
                  the date as of which such price is required to be determined,
                  and otherwise such price shall be determined by an opinion of
                  a nationally recognized independent investment bank selected
                  by the mutual agreement of the Issuer and the Holder. In the
                  case of rights, options, warrants or convertible or
                  exchangeable securities, the price per share of Common Stock
                  shall be determined by dividing (x) the total amount received
                  or receivable by the Issuer in consideration of the sale and
                  issuance of such rights, options, warrants or convertible or
                  exchangeable securities, plus the total consideration payable
                  to the Issuer upon exercise or conversion or exchange thereof,
                  by (y) the total number of shares of Common Stock covered by
                  such rights, options, warrants or convertible or exchangeable
                  securities.

                           (vi) No adjustment in the number of shares of Common
                  Stock convertible hereunder shall be required unless such
                  adjustment would result in an increase or decrease of at least
                  one percent (1%) of the number of shares of Common Stock for
                  which shares of the Securities are convertible; provided, that
                  any adjustments which by reason of this Section (vi) are not
                  required to be made shall be carried forward and taken into
                  account in any subsequent adjustment. Whenever an adjustment
                  shall be made pursuant to (i) through (v) above, the
                  Conversion Price shall be adjusted accordingly. All
                  calculations shall be made to the nearest one-thousandth of a
                  share.

                           (vii) No adjustment in the number of shares of Common
                  Stock received upon conversion need be made under Sections
                  (ii) through (iv) above if the Issuer issues or distributes to
                  the Holder of the Securities shares of Common Stock, the
                  shares, rights, options, warrants, or evidences of
                  indebtedness or assets referred to in those Sections which
                  such Holder would have been entitled to receive had this
                  conversion not occurred prior to the happening of such event
                  or the record date with respect thereto.

                           (viii) For the purpose of this Section 8, the term
                  "shares of Common Stock" shall mean (i) Common Stock of the
                  Issuer, or (ii) any other class of stock resulting from
                  successive changes or reclassifications of such shares
                  consisting solely of changes in par value, or from par value

                                       11
<PAGE>

                  to no par value, or from no par value to par value. In the
                  event that at any time, as a result of an adjustment made
                  pursuant to clause (ii) above, the Holders shall become
                  entitled to receive any securities of the Issuer other than
                  shares of Common Stock, thereafter the number of such other
                  shares so receivable upon conversion shall be subject to
                  adjustment from time to time in a manner and on terms as
                  nearly equivalent as practicable to the provisions with
                  respect to the shares of Common Stock contained in Section (i)
                  through (iv) above, and the other provisions of this Section 8
                  shall apply on like terms to any such other securities.

                           (ix) Except as provided in Sections (i) through (iii)
                  above, no adjustment in respect of any dividends shall be made
                  during the term of the Securities or upon the conversion of
                  the Securities.

                           (x) Upon the expiration of any rights, options,
                  warrants or conversion or exchange privileges with respect to
                  which an adjustment shall have been made pursuant to Section
                  (ii) or (iv) above, if any rights, options, warrants or
                  conversion or exchange privileges thereof have not been
                  exercised, the number of shares of Common Stock purchasable
                  upon conversion will, upon such expiration, be readjusted and
                  will thereafter be such as it would have been had it been
                  originally adjusted (or had the original adjustment not been
                  required, as the case may be) as if (i) the only shares of
                  Common Stock so issued were the shares of Common Stock, if
                  any, actually issued or sold upon the exercise of such rights,
                  options or warrants or conversion or exchange rights and (ii)
                  such shares of Common Stock, if any, were issued or sold for
                  the consideration actually received by the Issuer upon such
                  exercise, conversion or exchange plus the aggregate
                  consideration, if any actually received by the Issuer for the
                  issuance, sale or grant of all such rights, options or
                  warrants, whether or not exercised.

                  Whenever the number of shares purchasable upon conversion
shall be adjusted as required by the provisions of this Section 8, the Issuer
shall forthwith file in the custody of its Secretary or an Assistant Secretary
at its principal office and with its stock transfer agent, if any, an officers'
certificate showing the adjusted number of shares determined as herein provided,
setting forth in reasonable detail the facts requiring such adjustment and the
manner of computing such adjustment. Each such officers' certificate shall be
signed by the chairman, president or chief financial officer of the Issuer and
by the secretary or any assistant secretary of the Issuer. Each such officers'
certificate shall be made available at all reasonable times for inspection by
any holder of shares of the Securities and the Issuer shall, forthwith after
each such adjustment, mail a copy, by first-class mail, of such certificate to
the each of the Holders.

9.       Reclassification, Reorganization, Consolidation or Merger


                                       12
<PAGE>

                  In case of any reclassification, capital reorganization or
other change of outstanding shares of Common Stock of the Issuer (other than a
subdivision or combination of the outstanding Common Stock and other than a
change in the par value of Common Stock) or in case of any consolidation or
merger of the Issuer with or into another corporation (other than a merger with
a subsidiary in which merger the Issuer is the continuing corporation and that
does not result in any reclassification, capital reorganization or other change
of outstanding shares of Common Stock of the class issuable upon conversion) or
in case of any sale, lease, transfer or conveyance to another corporation of the
property and assets of the Issuer as an entirety or substantially as an
entirety, the Issuer shall, as a condition precedent to such transaction, cause
effective provisions to be made so that the Holder shall have the right
thereafter, by converting such Holder's shares of the securities, to receive in
lieu of the receipt of shares of Common Stock the kind and amount of shares of
stock and other securities and property (including cash) receivable upon such
reclassification, capitalization, reorganization and other change,
consolidation, merger, sale or conveyance by a holder of the number of shares of
Common Stock that would have been received upon conversion immediately prior to
such reclassification, capitalization, reorganization, change, consolidation,
merger, sale or conveyance. Any such provision shall include provision for
adjustments in respect of such shares of stock and other securities and property
that shall be as nearly equivalent as may be practicable to the adjustments
provided for in this Security. The foregoing provisions of this paragraph shall
similarly apply to successive reclassifications, capital reorganizations and
changes of shares of Common Stock and to successive consolidations, mergers,
sales or conveyances. In the event that in connection with any such
capitalization reorganization or reclassification, consolidation, merger, sale
or conveyance, additional shares of Common Stock shall be issued in exchange,
conversion, substitution or payment, in whole or in part, for, or of, a security
of the Issuer other than Common Stock, any such issue shall be treated as an
issue of Common Stock covered by the provisions of Paragraph (iv) of Section 8.

10.      Miscellaneous

                  This Security shall be deemed to be a contract under the laws
of the State of New York, and for all purposes shall be construed in accordance
with the laws of said State, without regard to any conflict of law provisions.
The parties hereto, including all guarantors or endorsers, hereby waive
presentment, demand, notice, protest and all other demands and notices in
connection with the delivery, acceptance, performance and enforcement of this
Security, except as specifically provided herein, and assent to extensions of
the time of payment, or forbearance or other indulgence without notice. The
Holder of this Security by acceptance of this Security agrees to be bound by the
provisions of this Security which are expressly binding on such Holder.

                  In determining whether the holders of the requisite aggregate
principal amount of Securities have concurred in any direction, consent or
waiver under this Security, Securities which are owned by the Issuer or any
other obligor on the Securities or by any person directly or indirectly
controlling or controlled by or under direct or 

                                       13

<PAGE>

indirect common control with the Issuer or any other obligor on the Securities
shall be disregarded and deemed not to be outstanding for the purpose of any
such determination; provided that any Securities owned by Quantum Industrial
Partners LDC or any Affiliate thereof shall be deemed outstanding for purposes
of making such a determination.

                  The Issuer may not assign any of its rights or delegate any of
its obligations under this Security (or any part thereof) without the prior
written consent of the Holder.

                  The Issuer represents, warrants and covenants to Holder that
it shall use its last efforts to repay this Security in accordance with the
terms hereof.

                  The Section headings herein are for convenience only and shall
not affect the construction hereof.

                                       14

<PAGE>


         IN WITNESS WHEREOF, the Issuer has caused this instrument to be duly
executed under its corporate seal.


                                            T/F PURIFINER, INC.

[Seal]


                                            By_________________________
                                                Name:
                                                Title

Dated: ____________________ __, 1998

Attest:


______________________________________




                                       15

<PAGE>


                           [FORM OF CONVERSION NOTICE]

                12% Senior Subordinated Convertible Note due 2003

To:      T/F Purifiner, Inc.

                  The undersigned owner of this Security hereby: (i) irrevocably
exercises the option to convert this Security, or the portion hereof below
designated, for shares of Common Stock, par value $.01 per share ("Common
Stock"), of T/F Purifiner, Inc. in accordance with the terms of this Security
and (ii) directs that such shares of Common Stock deliverable upon the
conversion, together with any check in payment for fractional shares and any
Security(ies) representing any unconverted principal amount hereof, be issued
and delivered to the registered holder hereof unless a different name has been
indicated below. If shares are to be delivered registered in the name of a
person other than the undersigned, the undersigned will pay all transfer taxes
payable with respect thereto.

Dated:__________

                                     Name:____________________________


                                     Signature________________________

                                     Principal Amount to be Converted: (if less 
                                     than all)

                                     $____________________________

                  Fill in for registration of shares if to be delivered, and of
Securities if to be issued, otherwise than to and in the name of the registered
holder.

                                     ____________________________  
                                     Social Security or Other

                                     
                                     Taxpayer Identification Number


                                     ____________________________
                                     (Name)

                                     ____________________________
                                     (Street Address)

                                     ____________________________
                                     (City, State and Zip Code)



                                       16



                             NOTE PURCHASE AGREEMENT

                                   dated as of

                                January 26, 1998

                                      among

                         QUANTUM INDUSTRIAL PARTNERS LDC

                                       and

                               T/F PURIFINER, INC.




<PAGE>


                             NOTE PURCHASE AGREEMENT


         AGREEMENT dated as of January 26, 1998 among Quantum Industrial
Partners LDC, a Cayman Islands exempted limited liability duration company (the
"Buyer") and T/F Purifiner, Inc., a Delaware corporation (the "Company").


                               W I T N E S S E T H

         WHEREAS, Buyer desires to purchase the Note (as hereinafter defined) on
the terms and subject to the conditions set forth herein; and

         WHEREAS, the Company desires to sell the Note to the Buyer on the terms
and subject to the conditions herein set forth.

         NOW, THEREFORE, the parties hereto agree as follows:


                                    ARTICLE I


                                   DEFINITIONS

         1.1 Definitions. The following terms, as used herein, have the
following meanings:

         "Affiliate" means, with respect to any Person, any other Person
directly or indirectly controlling, controlled by, or under common control with
such Person.

         "Common Stock" means the Common Stock, par value $.001 per share, of
the Company.

         "Encumbrances" means all voting trusts, arrangements, stockholder
agreements, proxies, liens, encumbrances, transfer restrictions, preemptive
rights, security, interests or community property rights.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended.

         "Material Adverse Effect" means a material adverse effect on the
assets, properties, business, prospects, operations or condition, financial or
otherwise, of the Company.

         "Note" shall have the meaning set forth in Section 2.1 hereof.

         "Person" means an individual, corporation, limited liability company,
partnership, association, trust or other entity or organization, including a
government or political subdivision or an agency or instrumentality thereof.

                                       1

<PAGE>

         "Registration Agreement" means the Registration Rights Agreement
between the Company and the Buyer dated as of June 19, 1997, as amendment by
that certain amendment dated as of the date hereof (the "Amendment"), in the
form attached hereto as Exhibit A.

         "SEC" means the Securities and Exchange Commission.

         "SEC Documents" means all documents required to have been filed by the
Company with the SEC under Sections 13, 14(a) and 15(d) of the Exchange Act
since its registration of its Common Stock under Section 12(g) of the Exchange
Act.

         "Securities Act" means the Securities Act of 1933, as amended.

                                   ARTICLE II

                                PURCHASE AND SALE

         2.1 Purchase and Sale of the Note. The Company hereby agrees to sell to
the Buyer and, subject to the terms and conditions herein set forth, the Buyer
agrees to purchase from the Company, the Company's 12% Senior Subordinated
Convertible Note in the aggregate principal amount of $500,000, in the form
attached hereto as Exhibit B (the "Note").

         2.2 Closing. The closing (the "Closing") of the purchase and sale of
the Note shall take place at the offices of Akin, Gump, Strauss, Hauer & Feld,
L.LP., 590 Madison Avenue, New York, New York 10022 on the date hereof. All
transactions at the Closing shall be deemed to take place simultaneously. At the
Closing:

         (a) The Buyer shall deliver to the Company $500,000 in cash or other
immediately available funds to an account designated by the Company.

         (b) The Company shall deliver to the Buyer, the Note duly registered in
the name of the Buyer.

         (c) The Company shall deliver to an account designated by Akin, Gump,
Strauss, Hauer & Feld, L.L.P., the amounts owed it pursuant to Section 6.2.

         Additionally, in connection with the closing of the transactions
contemplated hereby, the Company and the Buyer shall enter into the Amendment.

                                   ARTICLE III

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

         The Company hereby represents and warrants to the Buyer that:

         3.1 Corporate Existence and Power; Capitalization. The Company is a
corporation duly incorporated and validly existing and in good standing under
the laws of the 

                                       2

<PAGE>

State of Delaware, and has all corporate powers required to carry on its
business as now being conducted. The Company has no subsidiaries. The Company is
authorized or duly qualified to do business as a foreign corporation and is in
good standing in each jurisdiction where the character of the property owned or
leased by it or the nature of its activities make such qualification necessary.
The capitalization of the Company as of the date hereof is set forth on Schedule
3.1 hereto. The SEC Documents describe accurately all outstanding stock options,
warrants and other rights to purchase any equity securities of the Company.
Except as set forth on Schedule 3.1, there are no outstanding options, warrants,
rights to subscribe to, or securities or rights convertible or exercisable into
or exchangeable for any shares of capital stock of the Company or arrangements
by which the Company is or may become bound to issue additional shares of its
capital stock other than pursuant to the Note.

         3.2 Corporate Authorization. The execution, delivery and performance by
the Company of this Agreement, the Note and the Amendment and the consummation
by the Company of the transactions contemplated hereby and thereby, are within
the Company's corporate power and have been duly authorized by all necessary
corporate action on the part of the Company. This Agreement, the Note and the
Amendment have each been duly and validly executed by the Company and constitute
the valid and binding agreements of the Company, each enforceable against the
Company in accordance with its terms.

         3.3 Governmental and Court Authorization. The execution, delivery and
performance by the Company of this Agreement, the Note and the Amendment require
no consent, approval or authorization of, or filing, registration or
qualification with, any governmental body, agency, official, court or other
authority that has not been obtained or made.

         3.4 Non-Contravention. The execution, delivery and performance by the
Company of this Agreement, the Note and the Amendment do not and will not (A)
contravene or conflict with the Company's certificate of incorporation or
by-laws, or (B) (i) contravene or conflict with or constitute a violation of any
provision of any federal or state law, regulation, judgment, injunction, order
or decree binding upon or applicable to the Company, (ii) require any consent,
approval or other action by any Person or constitute a default under or give
rise to any right of termination, cancellation or acceleration of any right or
obligation of the Company or to a loss of any benefit to which the Company is
entitled under any provision of any agreement, contract, indenture, lease or
other instrument binding upon the Company or any license, franchise, permit or
other similar authorization held by the Company or (iii) result in the creation
or imposition of any Encumbrances on the Note.

         3.5 SEC Documents; Disclosure Documents. Each report or proxy statement
delivered to the Buyer is a true and complete copy of such document as filed by
the Company with the SEC. The Company has delivered to the Buyer all SEC
Documents filed with the SEC since January 1, 1994. The Company has filed in a
timely manner all documents that the Company was required to file with the SEC
under Sections 13, 14(a) and 15(d) of the Exchange Act since its registration of
its Common Stock under Section 12(g) of the Exchange Act. As of their respective
filing dates, all SEC Documents filed by the Company with the SEC complied in
all material respects with the Exchange Act or the Securities Act, as
applicable. None of the SEC Documents as of their respective dates contained any
untrue statement of a material fact or 

                                       3

<PAGE>

omitted to state a material fact required to be stated therein or necessary to
make the statements made therein, in light of the circumstances under which they
were made, not misleading. The financial statements of the Company included in
the SEC Documents (the "Financial Statements") complied as to form in all
material respects with applicable accounting requirements and with the published
rules and regulations of the SEC with respect thereto. The Financial Statements
have been prepared in accordance with generally accepted accounting principles
consistently applied and fairly present the financial position of the Company at
the dates thereof and the results of operations and cash flows for the periods
then ended (subject, in the case of unaudited statements, to normal, recurring
adjustments).

         3.6 Due Authorization and Validity of the Note. The Note has been duly
authorized and when delivered against payment therefor as contemplated hereby
will be validly issued, fully paid and non-assessable and will not be subject to
any preemptive or similar rights. The Common Stock issuable upon conversion of
the Note has been reserved for issuance and, when issued upon conversion of the
Note, will be validly issued, fully paid and non-assessable and will not be
subject to any preemptive or similar rights.

         3.7 Absence of Certain Changes. Except for liquidity issues which have
been fully disclosed by the Company to QIP, in connection with QIP's
representation on the Board of Directors or otherwise, since September 30, 1997,
there has been no Material Adverse Effect.

         3.8 Litigation. Except as set forth in the SEC Documents or as
set-forth in Schedule 3.8 hereto, there is no action, suit, investigation or
proceeding pending against, or to the knowledge of the Company threatened
against or affecting, the Company or any of their respective properties before
any court or arbitrator or any governmental body, agency, official or authority
which (i) could reasonably be expected to have a Material Adverse Effect or (ii)
in any manner would enjoin, alter, call into question, affect or delay the
transactions contemplated by this Agreement.

         3.9 FIRPTA. The Company is not a "United States real property holding
corporation" within the meaning of Section 896(c)(2) of the Internal Revenue
Code of 1986, as amended.

         3.10 No Undisclosed Liabilities. The Company has no liabilities or
obligations not disclosed in the SEC Documents and those incurred in the
ordinary course of the Company's business since September 30, 1997.

         3.11 No Brokers. The Company has taken no action which would give rise
to any claim by any Person for brokerage commissions, finders' fees or similar
payments by the Buyer relating to this Agreement or the transactions
contemplated thereby.

         3.12 Disclosure. No representation, warranty or statement made by the
Company in this Agreement, the Registration Agreement or any agreement,
certificate, statement or document furnished by or on behalf of the Company in
connection herewith or therewith contains any untrue statement of a material
fact or omits to state a material fact necessary in order to make the statements
contained herein or therein, in light of the circumstances under which they were
made, misleading.

                                       4
<PAGE>

         3.13 Transactions with Affiliates. Except as set forth in the SEC
Documents or as set forth in Schedule 3.13, there are no business relationships
or related party transactions that would be required to be disclosed therein by
Item 404 of Regulation S-K of the SEC that are not so disclosed.

         3.14 Intellectual Property. Except as disclosed in the SEC Documents or
Schedule 3.14 hereto:

                  (a) the Company owns, possesses, controls or is licensed
under, such patents (or applications therefor), trademarks and service marks
(and registrations thereof), copyrights (and registrations thereof), utility
models, inventions, know-how, trade secrets, and other intellectual property
(all of aforesaid referred to as "Necessary Intellectual Property Rights") as
are necessary for the operation of the business now conducted or operated by the
Company, including but not limited to the property listed on Schedule 3.14;

                  (b) to the knowledge of Company all Necessary Intellectual
Property Rights are valid and subsisting and the Company is unaware of any fact
which, individually or in the aggregate, would materially detrimentally affect
the validity, ownership or enforceability of the Necessary Intellectual Property
Rights;

                  (c) the Company is not aware of, or has not received notice
of, any asserted right with respect to any of the Necessary Intellectual
Property Rights which, if determined unfavorably with respect to the interests
of the Company would have a Material Adverse Effect;

                  (d) the Company is unaware of any patent, trademark, copyright
or other intellectual property license to which the Company is a party as
licensor or licensee, which has been revoked, terminated or canceled, or which
is likely or subject to being revoked, terminated or canceled, where the
revocation, cancellation or termination would have a Material Adverse Effect;
and

                  (e) the Company has not been notified or advised, has not been
the recipient of a claim, or is otherwise not aware, that any activity of the
Company infringes or violates the patent, trademark, copyright or other
intellectual property right of any third party.


                                   ARTICLE IV


                   REPRESENTATIONS AND WARRANTIES OF THE BUYER

         The Buyer hereby represents and warrants, to the Company as of the date
hereof that:

         4.1 Organization; Existence. The Buyer is duly organized, validly
existing and in good standing under the laws of the jurisdiction of its
incorporation, and the Buyer has all

                                       5

<PAGE>

necessary corporate powers and all material governmental licenses,
authorizations, consents and approvals required to carry on its business as now
being conducted.

         4.2 Corporate Authorization. The execution, delivery and performance by
the Buyer of this Agreement and the Amendment and the consummation by the Buyer
of the transactions contemplated hereby and thereby are within the Buyer's
corporate powers and have been duly authorized by all necessary corporate or
other action on the part of the Buyer.

         4.3 Governmental and Court Authorization. The execution, delivery and
performance by the Buyer of this Agreement and the Amendment require no consent,
approval or authorization of, or filing, registration or qualification with, any
governmental body, agency, official, court or authority that has not been
obtained or made.

         4.4 Non-Contravention. The execution, delivery and performance by the
Buyer of this Agreement and the Amendment do not and will not (A) contravene or
conflict with the certificate of incorporation or bylaws of it or (B) contravene
or conflict with or constitute a violation of any provision of any law,
regulation, judgment, injunction, order or decree binding upon or applicable to
it.

         4.5      Purchase for Investment; Legends.

         (a) The Note is being acquired for its own account, and not with a view
to public distribution in violation of the Securities Act. Notwithstanding the
foregoing, the Buyer shall have the right at all times to sell or otherwise
dispose of all or any part of the Note or the Common Stock issuable upon
conversion of the Note pursuant to a registration, or exemption therefrom, under
the Securities Act. It is an "accredited investor" as defined in Rule 501 under
the Securities Act.

         (b) Upon original issuance thereof, and until such time as the same is
no longer required under the applicable requirements of the Securities Act, the
Note (and all Common Stock issued in exchange therefor or substitution thereof)
shall bear the following legend:

         THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
         AS AMENDED, AND MAY NOT BE SOLD, ASSIGNED, OR OTHERWISE TRANSFERRED OR
         DISPOSED OF EXCEPT IN COMPLIANCE WITH SUCH ACT AND THE APPLICABLE RULES
         AND REGULATIONS THEREUNDER.


                                       6

<PAGE>

                                    ARTICLE V


                                    COVENANTS

         5.1 Registration. If and to the extent required by the Registration
Agreement, the Company agrees that it will register the Common Stock issuable
upon conversion of the Note for sale under federal and state securities laws in
accordance with the Registration Agreement.

         5.2 Transactions with Affiliates. So long as the Note is outstanding,
without the Buyer's written consent, the Company shall not conduct any business
or enter into any transaction or series of similar transactions with any
Affiliate of the Company or any legal or beneficial owner of 5% or more of any
class of capital stock of the Company with an Affiliate of such owner unless the
terms of such business, transaction or series of transactions are set forth in
writing and as favorable to the Company as terms that would be obtainable at the
time for a comparable transaction or series of similar transactions in arm's
length dealings with an unrelated third person. For purposes of this Section
5.2, the Buyer shall be not deemed to be an Affiliate. Notwithstanding the
foregoing, so long as the Note is outstanding, the Company shall not make, or
cause any other party to make, any loans to any shareholders of the Company. The
Company further agrees that it will not enter into any transaction with any
Affiliate or any legal or beneficial owner of 5% or more of any class of capital
stock of the Company or an Affiliate or family member of such person unless the
terms of such transaction have been presented to and approved by the Board of
Directors of the Company.

         5.3 Restricted Payments. So long as the Note is outstanding, the
Company will not, without the prior written consent of the Buyer, (i) declare or
pay any dividend or make any other payment or distribution on account of any
capital stock of the Company, (ii) purchase redeem or otherwise acquire or
retire for value any capital stock of the Company or (iii) except for
indebtedness as set forth on Schedule 5.3 that the Company is already committed
to retiring, purchase, redeem, defease or otherwise acquire or retire for value
any indebtedness that is subordinate or pari passu to the Note (each a
"Restricted Payment").

         5.4 Proceeds of Financing. The proceeds of the sale of the Note will be
used by the Company for (i) general operating expenses of the Company and (ii)
to repay a former shareholder loan of $103,501.16 to the estate of Willard
Taylor.


                                   ARTICLE VI


                               CLOSING DELIVERIES

         Simultaneously with the execution and delivery of this Agreement, the
following deliveries shall be made:

         6.1 Amendment to Registration Rights Agreement. The Buyer and the
Company shall enter into the Amendment.

                                       7
<PAGE>

         6.2 Reimbursement. The Company shall have reimbursed the Buyer for its
out-of-pocket costs and expenses incurred in connection with the closing of the
transactions contemplated by this Agreement and the Amendment, provided,
however, that in no such event shall reimbursement for out-of-pocket costs and
expenses exceed $1,000.

         6.3 Officer's Certificate. The Company shall deliver a certificate from
its Secretary attesting to the authenticity of the following documents: (i) the
certificate of incorporation of the Company; (ii) the by-laws of the Company;
and (iii) the resolutions of the Company authorizing the sale of the Note and
the reservation of shares of Common Stock issuable upon conversion of the Note.

         6.4 Opinion. The Company shall cause Atlas, Pearlman, Trop & Borkson,
P.A., to deliver to the Buyer an opinion in the form attached hereto as Exhibit
C.


                                   ARTICLE VII


                            SURVIVAL; INDEMNIFICATION

         7.1 Survival. The covenants, agreements, representations and warranties
of the parties hereto contained in this Agreement or in any certificate or other
writing delivered pursuant hereto or in connection herewith shall survive the
Closing.

         7.2 Indemnification. The Company shall indemnify and hold harmless the
Buyer (and its directors, officers, employees, Affiliates and permitted assigns)
from and against all losses, liabilities, charges, damages, deficiencies, costs
and expenses (including interest, penalties and attorney's fees and
disbursements) (collectively, "Loss"), sustained or incurred by the Buyer based
upon or arising out of (i) any inaccuracy or defect or breach of any
representation or warranty by the Company in this Agreement or (ii) any failure
by the Company to perform or observe any term or covenant of this Agreement or
the Registration Agreement required to be performed by it, and will reimburse
the Buyer for any reasonable legal or other expenses incurred by it in
connection with the investigating or defending of any Loss.


                                  ARTICLE VIII

                                  MISCELLANEOUS

         8.1 Notices. All notices, requests and other communications to any part
hereunder shall be in writing (including telecopy or similar writing) and shall
be effective upon receipt and shall be given, if to the Buyer, to:



                                       8

<PAGE>


                                    Quantum Industrial Partners LDC
                                    c/o Curacao Corporation Company, N.V.
                                    Kaya Flamboyan
                                    Willemstad, Curacao
                                    Netherlands, Antilles
                                    Fax: 599-9-322-001

                                    with a copy to:

                                    Soros Fund Management
                                    888 Seventh Avenue
                                    New York, New York  10106
                                    Attention: Michael Neus
                                    Fax: (212) 664-0544

                                    and

                                    Akin, Gump, Strauss, Hauer & Feld, L.L.P.
                                    590 Madison Avenue
                                    New York, New York  10022
                                    Attention: Edward D. Sopher
                                    Fax: (212) 872-1002

                                    If the Company to:

                                    T/F Purifiner, Inc.
                                    3036 High Ridge Road
                                    Suite 100
                                    Boyton Beach, Florida  33426
                                    Attention:  Keith T.J. Hart
                                    Fax:  (561) 547-4025


                                    with a copy to:

                                    Atlas, Pearlman, Trop & Borkson, P.A.
                                    New River Center - Suite 1900
                                    200 East Los Olas Boulevard
                                    Fort Lauderdale, Florida  33301
                                    Attention:  Jim Schneider
                                    Fax:  (954) 523-1952


or to such other address or Person as any of the parties may designate by 
written notice hereunder.


                                       9
<PAGE>

         8.2 Amendments: No Waivers.

         (a) Any provision of this Agreement may be amended or waived if, and
only if, such amendment or waiver is in writing and signed, in the case of an
amendment, by the Buyer and the Company, or in the case of a waiver, by the
party against whom the waiver is to be effective.

         (b) No failure or delay by either party in exercising any right, power
or privilege hereunder shall operate as a waiver thereof nor shall any single or
partial exercise thereof preclude any other or further exercise thereof or the
exercise of any other right, power or privilege. The rights and remedies herein
provided shall be cumulative and not exclusive of any rights or remedies
provided by law;

         8.3 Expenses. All reasonable costs and expenses incurred by the Buyer
in connection with this Agreement and the Amendment shall be paid by the
Company.

         8.4 Successors and Assigns. The provisions of this Agreement shall be
binding upon and inure to the benefit of the parties hereto and their respective
successors and assigns; provided that no party may assign, delegate or otherwise
transfer any of its rights or obligations under this Agreement without the
consent of the other parties hereto.

         8.5 Governing Law. THIS AGREEMENT SHALL BE CONSTRUED IN ACCORDANCE WITH
AND GOVERNED BY THE LAW OF THE STATE OF NEW YORK.

         8.6 Counterparts; Effectiveness. This Agreement may be signed in any
number of counterparts, each of which shall be an original, with the same effect
as if the signatures thereto and hereto were upon the same instrument. This
Agreement shall become effective when each party hereto shall have received a
counterpart hereof signed by the other parties hereto.

         8.7 Entire Agreement. This Agreement, the Note and the Amendment
constitute the entire agreement between the parties with respect to the subject
matter hereof and supersede all prior agreements, understandings and
negotiations, both written and oral, between the parties with respect to the
subject matter of this Agreement.

         8.8 Jurisdiction. Any suit, action or proceeding seeking to enforce any
provision of, or based on any matter arising out of or in connection with, this
Agreement or the transactions contemplated hereby may be brought against either
of the parties in the courts of the State of New York in New York City, or, if
it has or can acquire jurisdiction, in the United States District Court for the
Southern District of New York, and each of the parties hereby consents to the
jurisdiction of such courts (and of the appropriate appellate courts) in any
such suit, action or proceeding and waives any objection to venue laid therein.
Process in any such suit, action or proceeding may be served on any party
anywhere in the world, whether within or without the State of New York.

         8.9 Captions. The captions herein are included for convenience of
reference only and shall be ignored in the construction or interpretation
hereof.


                                       10

<PAGE>


         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed by their respective authorized signatories as of the day and year
first above written.

                         QUANTUM INDUSTRIAL PARTNERS LDC


                                            By:_________________________
                                                  Name:
                                                  Title:


                                            T/F PURIFINER, INC.


                                            By:_________________________
                                                  Name:
                                                  Title:


                                       11




                  THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT
OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS AND MAY NOT BE SOLD, ASSIGNED
OR OTHERWISE TRANSFERRED OR DISPOSED EXCEPT IN COMPLIANCE WITH SUCH ACT AND THE
APPLICABLE RULES AND REGULATIONS THEREUNDER.

US $500,000                                                   New York, New York
                                                                January 26, 1998

                               T/F PURIFINER, INC.

                12% SENIOR SUBORDINATED CONVERTIBLE NOTE DUE 2003

                  T/F Purifiner, Inc., a Delaware corporation (the "Issuer"),
for value received hereby promises to pay to Quantum Industrial Partners LDC or
registered assigns (the "Holder") the principal amount of FIVE HUNDRED THOUSAND
DOLLARS ($500,000) plus any accrued but unpaid interest at such place or such
bank account in the United States of America as the Holder may from time to time
direct on January 1, 2003 in such coin or currency of the United States of
America as at the time of payment shall be legal tender for the payment of
public and private debts.

                  This Security is issued pursuant to a Note Purchase Agreement
dated as of January 26, 1998 by and between the Issuer and the Holder (the
"Purchase Agreement"). This Security is transferable and assignable at any time,
in whole or in part, to one or more purchasers or persons. The Issuer agrees to
issue from time to time replacement Securities in the form hereof to facilitate
such transfers and assignments. In addition, after delivery of an indemnity in
form and substance satisfactory to the Issuer, the Issuer also agrees to issue
replacement Securities for the Security which have been lost, stolen, mutilated
or destroyed.

                  The Issuer shall keep at its principal office a register (the
"Register") in which shall be entered the names and addresses of the registered
holder(s) of the Security and particulars of all transfers of the Security. The
ownership of the Security shall be proven by the Register. For the purpose of
paying interest and principal on the Security, the Issuer shall be entitled to
rely on the name(s) and address(es) in the Register and notwithstanding anything
to the contrary contained in this Security, no Event of Default (as defined
below) shall occur under Section 6 if payment of principal is made in accordance
with the names and addresses and particulars contained in the Register.

                  No provision of this Security shall alter or impair the
obligations of the Issuer, which are absolute and unconditional, to pay the
principal of and interest on this Security at the place, times, rate, and in the
currency, herein prescribed.



<PAGE>

1.       Principal and Interest

                  The principal of this Security shall bear interest at the rate
of 12% per annum (the "Interest Rate") which shall accrue from the most recent
Interest Payment Date to which interest has been paid on this Security, or if no
interest has been paid on this Security from the date hereof until payment in
full of the principal amount has been made and be payable in cash quarterly on
April 1, July 1, October 1 and January 1 of each year (an "Interest Payment
Date"), commencing on April 1, 1998, to the Holder hereof until the principal
amount is paid or made available for payment. The interest so payable, and
punctually paid or duly provided for, on any Interest Payment will be paid to
the Holder of the Security at the close of business on the Record Date for the
interest payable on such Interest Payment Date. The "Record Date" for any
interest payment is the close of business on March 15, June 15, September 15 or
December 15, as the case may be, whether or not a Business Day, immediately
preceding the Interest Payment Date on which such Interest is payable; provided,
however, that at the option of the Company, on any Interest Payment Date,
interest may, in lieu of being paid in cash, accrue and be added to the
principal balance of this Security. "Business Day" means any day except a
Saturday, Sunday or other day on which commercial banks in the City of New York
are authorized by law to close.

                  Any amounts that have become due and payable hereunder and
remain unpaid by the Issuer shall accrue interest thereafter until payment in
full of such amount at the rate of fifteen percent (15%) (the "Default Rate")
per annum and shall be payable upon demand by the Holder.

                  Interest, whether at the Interest Rate or the Default Rate,
will be computed on the basis of a fraction, the denominator of which is 360 and
the numerator of which is the actual number of days elapsed from the date such
interest becomes due and payable.

                  Each of the Interest Rate and the Default Rate shall be
effective both before and after any judgment may be rendered in a court of
competent jurisdiction, provided, however, that if either the Interest Rate or
Default Rate is deemed to be in excess of the amount permitted to be charged by
the Issuer under applicable laws, the Holder shall be entitled to collect an
Interest Rate or Default Rate, as the case may be, only at the highest rate
permitted by law, and any interest collected by the Holder in excess of such
lawful amount shall be deemed a payment in reduction of the Principal Amount
then outstanding under this Security and shall be so applied.

2.       Subordination

                  The payment obligations evidenced by this Security shall be
subordinate to any indebtedness of the Issuer for cash advanced by any bank or
other financial institution ("Bank Debt") but shall rank senior to all other
indebtedness of the Issuer. The Issuer shall not issue, directly or indirectly,
any indebtedness which is senior to the indebtedness evidenced by this Security
unless such indebtedness is Bank Debt.

                                       2
<PAGE>

3.       Redemption

                  A. Optional Redemption. This Security will be redeemable at
the option of the Issuer at any time, in whole or in part, upon not less than
thirty (30) nor more than sixty (60) days' notice, at 100% principal amount
thereof, plus accrued and unpaid interest.

                  At least thirty (30) days but not more than sixty (60) days
before a redemption date, the Issuer shall send a notice of redemption,
first-class mail, postage prepaid, or facsimile with answer back and courier to
follow, to the Holder(s) of this Security to be redeemed at the address(es) of
the Holder as they appear in the Register.

                  If this Security is redeemed subsequent to a Record Date with
respect to any Interest Payment Date specified above and on or prior to such
Interest Payment Date, then any accrued interest will be paid on such Interest
Payment Date to the Holder of the Security on such Record Date.

                  B. Mandatory Redemption. The Security will be redeemable at
the option of the Holder(s) in whole or in part at any time on or after the
earlier of (i) January 1, 2001 and (ii) the date on which the Issuer raises cash
proceeds aggregating at least $10 million from any transaction or series of
transactions involving the sale of debt, equity or assets (a "Put Date") upon
not less than five (5) business days written notice to the Issuer at 100%
principal amount thereof, plus accrued and unpaid interest. The Issuer covenants
and agrees that it will immediately (but in any event within one (1) Business
Day) advise the Holder of the occurrence of any Put Date described in clause
(ii) above.

4.       Affirmative Covenants of Issuer

                  A. Visits and Inspections. The Issuer will permit the Holder,
upon reasonable notice, to (i) visit and inspect the properties of the Issuer
during business hours, (ii) inspect and make extracts from and copies of its
books and records, and (iii) discuss with and obtain information from its
principal officers, its business, assets, liabilities, financial position,
results of operations and business prospects. The Issuer will also permit the
Holder to discuss with its respective auditors its businesses, assets,
liabilities, financial positions, results of operations and business prospects.

                  B. Reporting. The IssuerCD will make available or cause to be
made available to each Holder as soon as practicable (except to the extent such
Holder specifically requests otherwise):

                           (i)      all annual, quarterly and periodic reports
                                    prescribed by Sections 13, 14 and 15(d) of
                                    the Exchange Act (whether or not the Issuer
                                    is subject to such requirements);

                           (ii)     all reports furnished to the Issuer's board 
                                    members and securityholders;

                                       3
<PAGE>


                           (iii)    any reports (including management reports)
                                    submitted to the Issuer by the Issuer's
                                    independent public accountants

                           (iv)     a copy of the annual budget for the Issuer
                                    (in no event later than 60 days after the
                                    commencement of each fiscal year) and any
                                    material amendment thereto;

                           (v)      notice of the commencement of and progress
                                    of any material proceedings or
                                    investigations by or before any governmental
                                    body, court or arbitrator against, or to the
                                    extent known to the Issuer, in any other way
                                    relating adversely to the Issuer;

                           (vi)     notice of any material adverse change with
                                    respect to the business, financial position,
                                    results of operations or prospects of the
                                    Issuer;

                           (vii)    notice and details of any default or the
                                    occurrence or non-occurrence of any event
                                    which constitutes, or which with the passage
                                    of time or giving of notice or both would
                                    constitute a default by the Issuer under any
                                    material agreement other than this Agreement
                                    to which the Issuer is party or by which any
                                    of its properties may be bound;

                           (viii)   such other information or reports relating
                                    to the Issuer as the Holder may reasonably
                                    request.

                  C. Reservation and Issuance of Common Stock. The Issuer
covenants that it will at all times reserve and keep available out of its
authorized shares of Common Stock par value $.001 per share (the "Common
Stock"), free from preemptive rights, solely for the purpose of issue upon
conversion of the Securities as herein provided, such number of shares of the as
shall then be issuable upon the conversion of all outstanding shares of the
Securities into Common Stock. The Issuer covenants that all shares of Common
Stock which shall be so issuable shall, when issued, be duly and validly issued
and fully paid and non-assessable.

                  D Compliance With Governmental Requirements. The Issuer
covenants that if any shares of Common Stock required to be reserved for
purposes of conversion of Securities hereunder require registration with or
approval of any governmental authority under any Federal or State law, or any
national securities exchange, before such shares may be issued upon conversion,
the Issuer will use its best efforts to cause such shares to be duly registered
or approved, as the case may be.

                  E. Notification of Certain Matters. The Issuer shall notify
the Holders promptly (and in any event no later than 10 days prior to any
applicable record date) of any proposal for the authorization or issuance of
rights or other distributions to 


                                       4
<PAGE>

securityholders, any subdivision, combination or reclassification affecting the
capital stock, any merger or consolidation affecting the Issuer, the voluntary
or involuntary dissolution, liquidation or winding-up of the Issuer or any sale
or transfer of any significant portion of the Issuer's assets.

5.       Negative Covenants

                  A. Restricted Payments. Without the written consent of a
majority of holders of an aggregate principal amount of the Securities
outstanding (the "Majority Holders"), the Issuer will not make to any Person (i)
any dividend or other payment or distribution on any capital stock of the
Issuer; (ii) any payment on account of the purchase, redemption, retirement or
other acquisition of any shares of the Issuer's capital stock any option,
warrant or other right to acquire shares of the Issuer's capital stock, or (iii)
any defeasance, redemption, repurchase or other acquisition or retirement for
value prior to scheduled maturity of any indebtedness ranked pari passu or
subordinate in right of payment to the Securities and having a maturity date
subsequent to the maturity of the Securities. "Person" means an individual,
corporation, limited liability company, partnership, association, trust or other
entity or organizations, including a government or political subdivision or an
agency or instrumentality thereof.

                  B. Transactions with Affiliates. Without the written consent
of the Majority Holders, the Issuer shall not conduct any business or enter into
any transactions or series of similar transactions with an Affiliate of the
Issuer or any legal or beneficial owner of 5% or more of any class of capital
stock of the Issuer with an Affiliate of such owner unless the terms of such
business transaction or series of transactions are set forth in writing and as
favorable to the Issuer as terms that would be obtainable at the time for a
comparable transaction or series of similar transactions in arm's length
dealings with an unrelated third person. For purposes of this paragraph B, the
Quantum Industrial Partners LDC shall not be deemed to be an Affiliate. The
Issuer shall not make, or cause any other party to make, any loans to
shareholders of the Issuer. The Issuer further agrees that it will not enter
into any transaction with any Affiliate or legal or beneficial onwer of 5% or
more of any class of capital stock of the Issuer or and Affiliate or family
member of such Person unless the terms of such transaction have been presented
to and approved by the Board of Directors of the Issuer. "Affiliate" of any
Person means any other Person directly or indirectly controlling or controlled
by or under direct or indirect common control with such Person. For the purposes
of this definition, "control" when used with respect to any Person means the
possession, directly or indirectly, of the power to direct or cause the
direction of the management and policies of such Person, whether through the
ownership of voting securities, by contract or otherwise; and the terms
"controlling" and "controlled" have meanings correlative to the foregoing.

                  C. Amendment to Certain Documents. The Issuer shall not enter
into any amendment of, or agree to or accept or consent to any waiver of any of
the material provisions of its certificate of incorporation (including any
certificate of designation) or By-laws.


                                       5

<PAGE>

6.       Default

                  The occurrence of any of the following events or conditions
shall constitute an event of default (each an "Event of Default") with respect
to the Issuer of this Security:

                  (a) Any amounts due under this Security are not paid on the
         day after the due date therefore.

                  (b) The Issuer or any subsidiary of the Issuer (i) shall
         commence any case, proceeding or other action (A) under any existing or
         future law of any jurisdiction, domestic or foreign, relating to
         bankruptcy, insolvency, reorganization, arrangement, adjustment,
         winding-up, liquidation, dissolution, composition or other relief with
         respect to it or its debts, or (B) seeking appointment of a receiver,
         trustee, custodian or other similar official for it or for all or any
         substantial part of its assets, or Issuer shall make a general
         assignment for the benefit of its creditors; or (ii) there shall be
         commenced against Issuer any case, proceeding or other action of a
         nature referred to in clause (i) above which (A) results in the entry
         of an order for relief or any such adjudication or appointment or (B)
         remains undismissed, undischarged or unbonded for a period of ninety
         (90) days.

                  (c) The Issuer shall fail to perform any agreement or covenant
         on its part contained herein or in the Purchase Agreement.

                  (d) Any default by the Issuer or any subsidiary with respect
         to any indebtedness (whether existing or hereinafter created) which
         would permit the holder thereof to declare such indebtedness to be due
         and payable prior to its stated maturity.

                  Upon the occurrence and during the continuance of an Event of
Default, the Holder will have the option, upon notice to the Issuer, of
declaring the principal amount hereunder together with unpaid accrued interest
thereon to be immediately due and payable.

                  The Issuer agrees to pay on demand all of the Holder's costs
and expenses, including without limitation reasonable attorneys' fees, in
connection with the collection of any sums due the Holder, the enforcement or
protection of its rights hereunder, any amendment to this Security or any waiver
hereunder or under the Purchase Agreement.

                  No failure on the part of the Holder or other holders hereof
to exercise any right or remedy hereunder, whether before or after the happening
of a default shall constitute a waiver thereof, and no waiver of any past
default shall constitute waiver of any future default or of any acceptance of a
past due installment, or indulgence granted from time to time shall be construed
to be a waiver of the right to insist upon prompt payment thereafter or to
impose late charges retroactively or prospectively, or shall be 


                                       6
<PAGE>

deemed to be a novation of this Security or as a reinstatement of the debt
evidenced hereby or as a waiver of such right or acceleration or any other
right, or be construed so as to preclude the exercise of any right which the
Holder may have, whether by the laws of the State of New York, by agreement or
otherwise; and the Issuer hereby expressly waives the benefit of any statute or
rule of law or equity which would produce a result contrary to or in conflict
with the foregoing.

7.       Conversion

                  Subject to and upon compliance with the provisions of this
Section, the principal amount of this Security or any portion thereof may, at
any time and at or before the close of business on January 1, 2003, or
thereafter if any Event of Default shall occur and be continuing, be converted
into duly authorized, validly issued, fully-paid and nonassessable shares of
Common Stock at $2.75 per share (the "Conversion Price"), or, in case an
adjustment in the Conversion Price and the securities or other property issuable
upon conversion has taken place pursuant to Section 8 hereof, then at the
applicable Conversion Price and in such securities or other property as so
adjusted, upon surrender of the Security or Securities, the principal amount of
which is so to be converted, to the Issuer at any time during usual business
hours at the Issuer's offices, accompanied by a written notice of election to
convert as provided in the form attached hereto and, if so required by the
Issuer, by a written instrument or instruments of transfer in form satisfactory
to the Issuer duly executed by the registered holder or his attorney duly
authorized in writing.

                  No payment or adjustment will be made for dividends on any
Common Stock except as provided in Section 8 hereof. On conversion of a
Security, that portion of any interest accrued and unpaid interest attributable
to the period from the date of the Security to the Conversion Date with respect
to the converted Security shall not be canceled, extinguished or forfeited, but
rather shall be deemed to be paid in full to the Holder thereof through delivery
of the Common Stock, in exchange for the Security being converted pursuant to
the provisions hereof. If the Holder converts more than one Security at the same
time, the number of shares of Common Stock issuable upon the conversion shall be
based on the total Principal Amount of the Securities converted.

                  As promptly as practicable after the surrender, as herein
provided, of any Security or securities for conversion, the Issuer shall deliver
or cause to be delivered at its said office or agency to or upon the written
order of the holder of the Security or securities so surrendered a certificate
or certificates representing the number of duly authorized, validly issued,
fully-paid and nonassessable shares of Common Stock, into which such Security or
Securities may be converted in accordance with the provisions of Section 7.
Prior to delivery of such certificate or certificates, the Issuer shall require
a written notice at its said office or agency from the Holder of the Security or
securities so surrendered stating that the holder irrevocably elects to convert
such Security or Securities, or, if less than the entire principal amount
thereof is to be converted, stating the portion thereof to be converted. Such
notice shall also state the name or names (with

                                       7

<PAGE>

address and social security or other taxpayer identification number) in which
said certificate or certificates are to be issued. Such conversion shall be
deemed to have been made at the time that such Security or Securities shall have
been surrendered for conversion and such notice shall have been received by the
Issuer, the rights of the holder of such Security or Securities as a
Securityholder shall cease at such time, the person or persons entitled to
receive the shares of Common Stock, upon conversion of such Security or
Securities shall be treated for all purposes as having become the record holder
or holders of such shares of Common Stock at such time and such conversion shall
be at the Conversion Price in effect at such time. In the case of any Security
which is converted in part only, upon such conversion, the Issuer shall execute
and deliver to the holder thereof, as requested by such holder, a new Security
or securities of authorized denominations in aggregate principal amount equal to
the unconverted portion of such Security.

8.       Adjustment of Conversion Price

                  The Conversion Price in effect at any time shall be subject to
adjustment from time to time upon the happening of certain events, as follows:

                           (i) In case the Issuer shall at any time after the
                  date hereof (1) declare or pay a dividend in shares of Common
                  Stock or make a distribution of Common Stock, (2) subdivide
                  its outstanding shares of Common Stock, (3) combine its
                  outstanding shares of Common Stock into a smaller number of
                  shares of Common Stock or (4) issue any shares of its capital
                  stock in a reclassification of Common Stock (including any
                  such reclassification in connection with a consolidation or
                  merger in which the Issuer is the continuing entity), the
                  number of shares of Common Stock purchasable upon conversion
                  immediately prior thereto shall be adjusted so that the Holder
                  of the Securities shall be entitled to receive the number
                  shares of Common Stock or other securities of the Issuer which
                  he would have owned or have been entitled to receive after the
                  happening of any of the events described above, had conversion
                  occurred immediately prior to the happening of such event or
                  any record date with respect thereto. An adjustment made
                  pursuant to this paragraph (i) shall become effective
                  immediately after the effective date of such event retroactive
                  to the record date, if any, for such event.

                           (ii) In case the Issuer shall at any time after the
                  date hereof issue rights, options or warrants to all holders
                  of its outstanding Common Stock entitling them to subscribe
                  for or purchase shares of Common Stock at a price per share
                  which is lower at the record date mentioned below than the
                  higher (A) of the market price per share of the Common Stock
                  (as defined in Section (v) below) and (B) the Conversion
                  Price, then the number of shares of Common Stock thereafter
                  purchasable upon conversion shall be determined by multiplying
                  the number of shares of 


                                       8
<PAGE>

                  Common Stock theretofore purchasable upon conversion by a
                  fraction, of which the numerator shall be the number of shares
                  of Common Stock outstanding on the record date for determining
                  stockholders entitled to receive such rights, options or
                  warrants plus the number of additional shares of Common Stock
                  offered for subscription or purchase, and of which the
                  denominator shall be the number of shares of Common Stock
                  outstanding on the record date for determining stockholders
                  entitled to receive such rights, options or warrants plus the
                  number of shares which the aggregate offering price of the
                  total number of shares of Common Stock so offered would
                  purchase at the current market price per share of Common Stock
                  at such record date. Such adjustment shall be made whenever
                  such rights, options or warrants are issued, and shall become
                  effective as of immediately after the record date for the
                  determination of stockholders entitled to receive such rights,
                  options or warrants.

                           (iii) In case the Issuer shall at any time after the
                  date hereof distribute to all holders of its shares of Common
                  Stock evidences of its indebtedness or assets (including
                  securities and cash dividends not paid out of funds legally
                  available for the payment of dividends under the laws of the
                  jurisdiction of incorporation of the Issuer or not made in the
                  ordinary course of business), but excluding dividends or
                  distributions referred to in Section (i) above or rights or
                  options or warrants referred to in Section (ii) above, then in
                  each case the number of shares of Common Stock thereafter
                  purchasable upon conversion shall be determined by multiplying
                  the number of shares of Common Stock theretofore purchasable
                  upon conversion by a fraction, of which the numerator shall be
                  then current market price per share of Common Stock (as
                  defined in Section (v) below) on the date of such
                  distribution, and of which the denominator shall be then
                  current market price per share of Common Stock, less then fair
                  value (as reasonably determined in good faith by the Board of
                  Directors of the Issuer, whose reasonable determination shall
                  be conclusive) of the portion of the assets or evidences of
                  indebtedness so distributed or of such subscription rights or
                  securities or warrants applicable to one share of Common
                  Stock. Such adjustment shall be made whenever any such
                  distribution is made, and shall become effective on the date
                  of distribution retroactive to the record date for the
                  determination o shareholders entitled to receive such
                  distribution.

                           (iv) In case the Issuer shall any time after the date
                  hereof sell and issue shares of Common Stock, or rights,
                  options, warrants or convertible or exchangeable securities
                  containing the right to subscribe for or purchase shares of
                  Common Stock (excluding (A) shares, rights, options, warrants
                  or convertible or exchangeable securities issued in any of the
                  transactions described in Sections (i) through (iii) above and
                  (B) 42,650 options contemplated to be issued to G & S
                  Technologies, Inc. as 


                                       9
<PAGE>

                  described in Schedule 3.8 the Purchase Agreement), a price per
                  share of Common Stock (as determined in accordance with
                  Section (v) below) that is lower than the higher of (A) the
                  current market value per share of Common Stock (as determined
                  in accordance with Section (v) below) on the date of such sale
                  or issuance or on the date of the agreement for such sale or
                  issuance (whichever is less) and (B) the Conversion Price,
                  then in each case the number of shares of Common Stock
                  thereafter purchasable upon conversion shall be increased by
                  multiplying the number of shares of Common Stock theretofore
                  purchasable upon the conversion by a fraction, the numerator
                  of which shall be (I) the total number of shares of Common
                  Stock issuable in connection with such sale and issuance, and
                  the denominator of which shall be (II) the number of shares of
                  Common Stock that the aggregate consideration received
                  (determined as provided below) for such sale or issuance would
                  purchase at the higher of the prices referred to in (A) and
                  (B) above. Such adjustment shall be made successively whenever
                  such an issuance is made. For the purposes of such
                  adjustments, the shares of Common Stock that the holder of
                  such rights, options, warrants, or convertible or exchangeable
                  securities shall be entitled to subscribe for or purchase
                  shall be deemed to be issued and outstanding as of the date of
                  such sale and issuance and the consideration received by the
                  Issuer therefor shall be deemed to be the consideration
                  received by the Issuer, plus the consideration or premiums
                  stated in such rights, options, warrants or convertible or
                  exchangeable securities to be paid for the shares of Common
                  Stock covered thereby. In case the issuer shall sell and issue
                  shares of Common Stock or rights, options, warrants or
                  convertible or exchangeable securities containing the right to
                  subscribe for or purchase Common Stock, for a consideration
                  consisting, in whole or in part, of property other than cash
                  or its equivalent, then in determining the "price per share of
                  Common Stock" and the "consideration received by the Issuer"
                  for purposes of the first sentence of this Section (iv), the
                  Board of Directors of the Issuer shall determine, on a
                  reasonable basis and in good faith, the fair value of such
                  property. In case the Issuer shall sell and issue rights,
                  options, warrants or convertible or exchangeable securities
                  containing the right to subscribe for or purchase shares of
                  Common Stock together with one or more other securities as
                  part of a unit at a price per unit, then in determining the
                  "price per share of Common Stock" and the consideration
                  received by the Issuer for purposes of the first sentence of
                  this Section (iv), the Board of Directors shall determine, on
                  a reasonable basis and in good faith, the fair value of the
                  rights, options, warrants or convertible or exchangeable
                  securities then being sold as part of such unit.

                           (v) For the purpose of any computation under sections
                  (ii) through (iv) above, the current market price per share of
                  Common Stock at any date shall be the average of the current
                  market value of Common Stock for the 20 consecutive trading
                  days commencing 30 trading days 


                                       10
<PAGE>

                  prior to such date; provided, that, if the Common Stock is not
                  then publicly traded, the current market price per share shall
                  be the average of the market value of the Common Stock of the
                  last 20 consecutive trading days prior to the last day of
                  trading; provided, however that such date is not earlier than
                  180 days prior to the date as of which such price is required
                  to be determined, and otherwise such price shall be determined
                  by an opinion of a nationally recognized independent
                  investment bank selected by the mutual agreement of the Issuer
                  and the Holder. In the case of rights, options, warrants or
                  convertible or exchangeable securities, the price per share of
                  Common Stock shall be determined by dividing (x) the total
                  amount received or receivable by the Issuer in consideration
                  of the sale and issuance of such rights, options, warrants or
                  convertible or exchangeable securities, plus the total
                  consideration payable to the Issuer upon exercise or
                  conversion or exchange thereof, by (y) the total number of
                  shares of Common Stock covered by such rights, options,
                  warrants or convertible or exchangeable securities.

                           (vi) No adjustment in the number of shares of Common
                  Stock convertible hereunder shall be required unless such
                  adjustment would result in an increase or decrease of at least
                  one percent (1%) of the number of shares of Common Stock for
                  which shares of the Securities are convertible; provided, that
                  any adjustments which by reason of this Section (vi) are not
                  required to be made shall be carried forward and taken into
                  account in any subsequent adjustment. Whenever an adjustment
                  shall be made pursuant to (i) through (v) above, the
                  Conversion Price shall be adjusted accordingly. All
                  calculations shall be made to the nearest one-thousandth of a
                  share.

                           (vii) No adjustment in the number of shares of Common
                  Stock received upon conversion need be made under Sections
                  (ii) through (iv) above if the Issuer issues or distributes to
                  the Holder of the Securities shares of Common Stock, the
                  shares, rights, options, warrants, or evidences of
                  indebtedness or assets referred to in those Sections which
                  such Holder would have been entitled to receive had this
                  conversion not occurred prior to the happening of such event
                  or the record date with respect thereto.

                           (viii) For the purpose of this Section 8, the term
                  "shares of Common Stock" shall mean (i) Common Stock of the
                  Issuer, or (ii) any other class of stock resulting from
                  successive changes or reclassifications of such shares
                  consisting solely of changes in par value, or from par value
                  to no par value, or from no par value to par value. In the
                  event that at any time, as a result of an adjustment made
                  pursuant to clause (ii) above, the Holders shall become
                  entitled to receive any securities of the Issuer other than
                  shares of Common Stock, thereafter the number of such other
                  shares 

                                       11

<PAGE>

                  so receivable upon conversion shall be subject to adjustment
                  from time to time in a manner and on terms as nearly
                  equivalent as practicable to the provisions with respect to
                  the shares of Common Stock contained in Section (i) through
                  (iv) above, and the other provisions of this Section 8 shall
                  apply on like terms to any such other securities.

                           (ix) Except as provided in Sections (i) through (iii)
                  above, no adjustment in respect of any dividends shall be made
                  during the term of the Securities or upon the conversion of
                  the Securities.

                           (x) Upon the expiration of any rights, options,
                  warrants or conversion or exchange privileges with respect to
                  which an adjustment shall have been made pursuant to Section
                  (ii) or (iv) above, if any rights, options, warrants or
                  conversion or exchange privileges thereof have not been
                  exercised, the number of shares of Common Stock purchasable
                  upon conversion will, upon such expiration, be readjusted and
                  will thereafter be such as it would have been had it been
                  originally adjusted (or had the original adjustment not been
                  required, as the case may be) as if (i) the only shares of
                  Common Stock so issued were the shares of Common Stock, if
                  any, actually issued or sold upon the exercise of such rights,
                  options or warrants or conversion or exchange rights and (ii)
                  such shares of Common Stock, if any, were issued or sold for
                  the consideration actually received by the Issuer upon such
                  exercise, conversion or exchange plus the aggregate
                  consideration, if any actually received by the Issuer for the
                  issuance, sale or grant of all such rights, options or
                  warrants, whether or not exercised.

                  Whenever the number of shares purchasable upon conversion
shall be adjusted as required by the provisions of this Section 8, the Issuer
shall forthwith file in the custody of its Secretary or an Assistant Secretary
at its principal office and with its stock transfer agent, if any, an officers'
certificate showing the adjusted number of shares determined as herein provided,
setting forth in reasonable detail the facts requiring such adjustment and the
manner of computing such adjustment. Each such officers' certificate shall be
signed by the chairman, president or chief financial officer of the Issuer and
by the secretary or any assistant secretary of the Issuer. Each such officers'
certificate shall be made available at all reasonable times for inspection by
any holder of shares of the Securities and the Issuer shall, forthwith after
each such adjustment, mail a copy, by first-class mail, of such certificate to
the each of the Holders.

9.       Reclassification, Reorganization, Consolidation or Merger

                  In case of any reclassification, capital reorganization or
other change of outstanding shares of Common Stock of the Issuer (other than a
subdivision or combination of the outstanding Common Stock and other than a
change in the par value of Common Stock) or in case of any consolidation or
merger of the Issuer with or into 

                                       12

<PAGE>

another corporation (other than a merger with a subsidiary in which merger the
Issuer is the continuing corporation and that does not result in any
reclassification, capital reorganization or other change of outstanding shares
of Common Stock of the class issuable upon conversion) or in case of any sale,
lease, transfer or conveyance to another corporation of the property and assets
of the Issuer as an entirety or substantially as an entirety, the Issuer shall,
as a condition precedent to such transaction, cause effective provisions to be
made so that the Holder shall have the right thereafter, by converting such
Holder's shares of the securities, to receive in lieu of the receipt of shares
of Common Stock the kind and amount of shares of stock and other securities and
property (including cash) receivable upon such reclassification, capitalization,
reorganization and other change, consolidation, merger, sale or conveyance by a
holder of the number of shares of Common Stock that would have been received
upon conversion immediately prior to such reclassification, capitalization,
reorganization, change, consolidation, merger, sale or conveyance. Any such
provision shall include provision for adjustments in respect of such shares of
stock and other securities and property that shall be as nearly equivalent as
may be practicable to the adjustments provided for in this Security. The
foregoing provisions of this paragraph shall similarly apply to successive
reclassifications, capital reorganizations and changes of shares of Common Stock
and to successive consolidations, mergers, sales or conveyances. In the event
that in connection with any such capitalization reorganization or
reclassification, consolidation, merger, sale or conveyance, additional shares
of Common Stock shall be issued in exchange, conversion, substitution or
payment, in whole or in part, for, or of, a security of the Issuer other than
Common Stock, any such issue shall be treated as an issue of Common Stock
covered by the provisions of Paragraph (iv) of Section 8.

10.      Miscellaneous

                  This Security shall be deemed to be a contract under the laws
of the State of New York, and for all purposes shall be construed in accordance
with the laws of said State, without regard to any conflict of law provisions.
The parties hereto, including all guarantors or endorsers, hereby waive
presentment, demand, notice, protest and all other demands and notices in
connection with the delivery, acceptance, performance and enforcement of this
Security, except as specifically provided herein, and assent to extensions of
the time of payment, or forbearance or other indulgence without notice. The
Holder of this Security by acceptance of this Security agrees to be bound by the
provisions of this Security which are expressly binding on such Holder.

                  In determining whether the holders of the requisite aggregate
principal amount of Securities have concurred in any direction, consent or
waiver under this Security, Securities which are owned by the Issuer or any
other obligor on the Securities or by any person directly or indirectly
controlling or controlled by or under direct or indirect common control with the
Issuer or any other obligor on the Securities shall be disregarded and deemed
not to be outstanding for the purpose of any such determination; provided that
any Securities owned by Quantum Industrial Partners LDC or any Affiliate thereof
shall be deemed outstanding for purposes of making such a determination.

                                       13

<PAGE>

                  The Issuer may not assign any of its rights or delegate any of
its obligations under this Security (or any part thereof) without the prior
written consent of the Holder.

                  The Issuer represents, warrants and covenants to Holder that
it shall use its last efforts to repay this Security in accordance with the
terms hereof.

                  The Section headings herein are for convenience only and shall
not affect the construction hereof.


                                       14
<PAGE>


         IN WITNESS WHEREOF, the Issuer has caused this instrument to be duly
executed under its corporate seal.


                                            T/F PURIFINER, INC.

[Seal]


                                            By________________________
                                                 Name:
                                                 Title

Dated:____________________  __, 1998

Attest:


_______________________________

                                       15


<PAGE>


                           [FORM OF CONVERSION NOTICE]

                12% Senior Subordinated Convertible Note due 2003

To:      T/F Purifiner, Inc.

                  The undersigned owner of this Security hereby: (i) irrevocably
exercises the option to convert this Security, or the portion hereof below
designated, for shares of Common Stock, par value $.01 per share ("Common
Stock"), of T/F Purifiner, Inc. in accordance with the terms of this Security
and (ii) directs that such shares of Common Stock deliverable upon the
conversion, together with any check in payment for fractional shares and any
Security(ies) representing any unconverted principal amount hereof, be issued
and delivered to the registered holder hereof unless a different name has been
indicated below. If shares are to be delivered registered in the name of a
person other than the undersigned, the undersigned will pay all transfer taxes
payable with respect thereto.

Dated:__________

                                      Name:______________________________

                                      ___________________________________
                                      Signature

                                      Principal Amount to be Converted: (if 
                                      less than all)

                                      $__________________________________

                  Fill in for registration of shares if to be delivered, and of
Securities if to be issued, otherwise than to and in the name of the registered
holder.

                                      ___________________________________
                                      Social Security or Other

                                      ___________________________________
                                      Taxpayer Identification Number

                                      ___________________________________
                                      (Name)

                                      ___________________________________
                                      (Street Address)

                                      ___________________________________
                                      (City, State and Zip Code)


                                       16



                                 AMENDMENT NO. 1

                                       TO

                          REGISTRATION RIGHTS AGREEMENT


         This Amendment No. 1, dated as of January 26, 1998, is by and between
T/F PURIFINER, INC., a Delaware corporation (the "Company"), and QUANTUM
INDUSTRIAL PARTNERS LDC, a Cayman Islands limited duration company (the
"Investor") .

         WHEREAS, the Company and the Investor entered into a Registration
Rights Agreement, dated as of June 19, 1997 (the "Registration Agreement");

         WHEREAS, in order to induce the Investor to enter into those
transactions contemplated by that Note Purchase Agreement dated as of January
26, 1998 by and between the Company and the Investor (the "Note Purchase
Agreement") and that Note Exchange Agreement by and between the Company and the
Investor dated as of January 26, 1998 (the "Note Exchange Agreement"), the
Company has agreed to provide registration rights with respect to the shares of
common stock of the Company, par value $.001 per share (the "Common Stock"),
issuable upon exercise of the securities issued to the Investor pursuant to the
Note Purchase Agreement and the Note Exchange Agreement;

         WHEREAS, the Company and the Investor desire to amend the Registration
Agreement in connection with the foregoing;

         NOW, THEREFORE, the parties, intending to be legally bound, hereby
agree as follows:


         1. Section 1 of the Registration Agreement is hereby amended and
restated in its entirety as follows:

         '1.      Securities Subject to this Agreement

         The term "Registrable Securities" shall mean (i) shares of the Common
         Stock issued and sold to the Investor pursuant to the Securities
         Purchase Agreement, (ii) shares of Common Stock issuable upon exercise
         of the warrant (the "Warrant") issued to the Investor pursuant to the
         Securities Purchase Agreement, that are from time to time held by the
         Investor or any subsequent holder thereof (the "Warrant Holders"),
         (iii) shares of Common Stock issuable upon the conversion of the 12%
         Senior Subordinated Convertible Note in the aggregate principal amount
         of $500,000 issued to the Investor pursuant to the Note Purchase
         Agreement dated as of January 26, 1998 by and between the Company and
         the Investor, that are from time to time held by the Investor or any
         subsequent holder thereof (the "Note Holders"), (iv) shares of Common
         Stock issuable upon the conversion of the 12% Senior Subordinated
         Convertible Note in the aggregate principal amount of $2,000,000 issued
         to the Investor pursuant to the Note Exchange Agreement dated as of
         January 26, 1998 by and between the Company and the 



<PAGE>

         Investor, that are from time to time held by the Investor or any
         subsequent holder thereof (the "Exchange Note Holders"; and together
         with the Warrant Holders and the Note Holders, the "Holders"), and (v)
         shares of Common Stock issued or issuable to the Holders by way of a
         dividend, stock split or other distribution or in connection with a
         combination of shares, recapitalization, merger, consolidation,
         reorganization or otherwise; provided, that such securities shall cease
         to be Registrable Securities when (a) a registration statement with
         respect to the sale of such securities shall have become effective
         under the Securities Act and such securities shall have been disposed
         of in accordance with such registration statement, (b) they shall cease
         to be outstanding or (c) they are distributed to the public pursuant to
         Rule 144 (or any similar provision then in effect) under the Securities
         Act.'

         2. Except as expressly amended hereby, the Registration Agreement, and
all rights and obligations of the Investor and the Company, thereunder, shall
remain in full force and effect. This amendment shall not, except as expressly
provided herein, be deemed to be a consent to any waiver or modification of any
other terms or provisions of the Registration Agreement.

         3. This Amendment may be signed in any number of counterparts, each of
which shall be an original, with the same effect as if the signatures thereto
and hereto were upon the same instrument. This Amendment shall become effective
when each party hereto shall have received a counterpart hereof signed by the
other parties hereto.

                                       2
<PAGE>


          IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed by their respective authorized signatories as of the day and
year first above written.

                         QUANTUM INDUSTRIAL PARTNERS LDC


                         By:______________________________
                            Name:
                            Title:


                         T/F PURIFINER, INC.


                         By:______________________________
                               Name:
                               Title:


                                       3



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