Paraoxon-ethyl, 100 µg/ml, Ethyl acetate, 5ml

1,2,4-Triazole-d3, 100µg/ml in Acetonitrile, 5ml

d4 C27 alpha alpha alpha (20R)-Cholestane, 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 205529-74-4

Indeno(1,2,3-c,d)pyrene-D12,10µg/mL in CY, 1ml