BIO-RAD LABORATORIES, INC. — Director's Dealing 2004

May 20, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BIO RAD LABORATORIES INC (bio)
CIK: 0000012208
Period of Report: 2004-02-04

Reporting Person: TSINGOS CHRISTINE A (Chief Financial Officer)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2004-02-04	Incentive Stock Option	$53.75	A	4016	Acquired	2014-02-04	Class A Common Stock (4016)	Direct
2004-02-04	Non Qualified Stock Option	$53.75	A	1984	Acquired	2014-02-04	Class A Common Stock (1984)	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Incentive Stock Option	$35.5	2013-02-05	Class A Common Stock (10000)	10000	Direct