4-tert-Octylphenol-di-ethoxylate, 1 µg/ml, Aceton

2,2',3,4,5-Pentachloro[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane

Malathion-d10 (diethyl-d10), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 347841-48-9

Atrazine-desisopropyl, 10.0 µg/ml, Acetonitrile,