The Safety Glazing Certification Council (SGCC), based in Sacketts Harbor, NY, maintains a certification program under which manufacturers of safety glazing products voluntarily submit their products for testing to an SGCC-approved independent testing laboratory. The testing procedures used in SGCC's program are consistent with those established in ANSI Z97.1, CPSC 16 CFR 1201 and CAN/CGSB 12.1.