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EXHIBIT 1
JOINT FILING AGREEMENT
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In accordance with Rule 13d-1(k) promulgated under the Securities
Exchange Act of 1934, as amended, the undersigned hereby agree to the joint
filing with all other Reporting Persons (as such term is defined in the Schedule
13D referred to below) and Robert J. Weltman on behalf of each of them of a
statement on Schedule 13D (including amendments thereto) with respect to the
common stock, par value $0.001 per share, of BioSource International, Inc., a
Delaware corporation, and that this Agreement may be included as an Exhibit to
such joint filing. This Agreement may be executed in any number of
counterparts, all of which taken together shall constitute one and the same
instrument.
IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as
of the 22nd day of September, 2000.
GENSTAR CAPITAL LLC
By: /s/ Jean-Pierre L. Conte
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Name: Jean-Pierre L. Conte
Its: Managing Member
GENSTAR CAPITAL PARTNERS II, L.P.
By: Genstar Capital LLC, its general partner
By: /s/ Jean-Pierre L. Conte
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Name: Jean-Pierre L. Conte
Its: Managing Member
STARGEN II LLC
By: /s/ Jean-Pierre L. Conte
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Name: Jean-Pierre L. Conte
Its: Member
/s/ Jean-Pierre L. Conte
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Jean-Pierre L. Conte
/s/ Jean-Pierre L. Conte
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Jean-Pierre L. Conte
Attorney-in-fact for
Richard F. Hoskins
/s/ Jean-Pierre L. Conte
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Jean-Pierre L. Conte
Attorney-in-fact for
Richard D. Paterson
/s/ Jean-Pierre L. Conte
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Jean-Pierre L. Conte
Attorney-in-fact for
Robert J. Weltman
