The Regional Standards and Testing Laboratory (RSTL) is a service unit of DOST-CAR. It is composed of three (3) laboratories:
a. Chemical Laboratory
b. Microbiological Laboratory
c. Regional Metrology Laboratory (RML).
The Chemical and Microbiological Laboratories are accredited by the Philippine Accreditation Bureau (ISO?/IEC 17025:2005) for the physico-chemical and microbiological analyses of water and food. It is also accredited by the Bureau of Health Facilities-DOH as a Water Testing Laboratory.
The RML offers mass calibration (balances and test weights) and volume calibration (calibrating buckets and dispensing pumps used by gasoline stations).