EXHIBIT 10.9.4 June 30, 1997 Bio-Rad Laboratories, Inc. 1000 Alfred Nobel Drive Hercules, California 94547 Attn: Mr. Ron Hutton Re: Amendment No. 4 to Credit Agreement (this "Amendment") Gentlemen/Ladies: We make reference to that certain Credit...Credit Agreement • November 13th, 1997 • Bio Rad Laboratories Inc • Laboratory analytical instruments • Illinois
