EXHIBIT 23.1

                          INDEPENDENT AUDITORS' CONSENT


The Board of Directors
BioSource International, Inc.:

We consent to  incorporation  by reference in the  registration  statement  (No.
33-91838)  on Form S-8 of  BioSource  International,  Inc.  of our report  dated
February 9, 2004, with respect to the  consolidated  balance sheets of BioSource
International,  Inc. and  subsidiaries  as of December 31, 2003 and 2002 and the
related consolidated  statements of income,  stockholders' equity and cash flows
for each of the years in the  three-year  period ended  December  31, 2003,  and
related financial statement  schedule,  which report appears in the December 31,
2003,  annual  report on Form 10-K of BioSource  International,  Inc. Our report
refers to the adoption of Statement of Financial  Accounting  Standards ("SFAS")
No. 142, "Goodwill and Other Intangible Assets."



KPMG LLP

Los Angeles, California
March 25, 2004