Parathion-ethyl, 100µg/ml in Acetonitrile, 5ml

Sulfamethoxazole-d4 (benzene-d4),100 µg/mL,MeOH,1mL

Iso-pentyl benzyl phthalate (3-Methylbutyl benzyl phthalate), neat, Solvent-neat, Unit 250mg, # of units-1, Cas.no. 72170-46-8

gamma-HCH, 10 µg/ml, Acetonitrile, 10ml