Contact C.E.R.T.S. 1392 Industrial Drive Tustin, CA 714-259-8833 Phone 714-566-0461 Fax By Phone: Call CERTS any business day, 7 a.m. to 5 p.m., Pacific Time at 714-259-8833. By Fax: Send a fax to CERTS at 714-566-0461 By E-mail: Send an e-mail to certs@cleanroomcertification.com ...