4-Chlorophenol-2,3,5,6-d4, OD,1000 µg/mL,isopropanol,1mL,

PCB 209, 100 µg/ml, Isooctane, 5ml

O,O-Diethyl dithiophosphate-13C4, ammonium salt,100 µg acid/mL,MeOH,1mL,

Isazofos, 10.0 µg/ml, Ethyl acetate, 10ml