RESIDUAL SOLVENTS

ASL’s residual solvent analysis is performed using Gas Chromatography (GC).

Per Colorado law, the following are the solvents and their limits up starting February 1, 2018:

    • Acetone <1000 ppm
    • Benzene <2 ppm
    • Butanes <1000 ppm
    • Ethanol <1000 ppm
    • Heptanes <1000 ppm
    • Hexane <60 ppm
    • Isopropyl alcohol <1000 ppm
    • Pentane <1000 ppm
    • Propane <1000 ppm
    • Toluene <180 ppm
    • Total Xylenes <430 ppm