(-)-delta-9-THC-acid-13C4

Sulfur Calibration Mixtures: Di-n-butyl sulfide in Light White Oil (less than 20mg/kg S) Unit : 10mL screw-capped bottle Light White Mineral Oil Heavy White Mineral Oil (20 cSt at 40°C) (70 cSt at 40°C)

Carcinogenic Aryl Amine Mix, 100µg/mL in Ethyl acetate, 1ml

VPH Primary Calibration Spike Rev 1.1