1,2,4-Butanetriol, 1mg/ml in pyridine, 5 x 20ml

PAH Mix (16 anal.), 100µg/mL in Acetonitrile, 1ml

EPA Method 418.1 - Total Petroleum Hydrocarbons

5ß(H)-Pregnane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 481-26-5