Sierra Research Laboratories, Inc. 
P.O. Box 576886
5100 Parker Road
Modesto, CA 95357

Phone and Fax (209) 521-6380
Office Hours: 
Monday - Friday 8:00 a.m. to 4:00 p.m.


El Jefe' (President)

The Captain (Laboratory Director)

The Boots on the Ground (Senior Scientist)

The Fall Guy (Technician)

The Dirty Work (Technician)
SRL is centrally located in Modesto, California; giving access to a wide variety of testing situations within the State of California. Our group would welcome a visit by you or other representatives of your organization to visit our laboratory or discuss potential research projects. Please feel free to contact SRL at any time and we hope our team can be of service to you in the future.