Atrazine-d5 (ethyl-d5),100 µg/mL,acetonitrile,1mL,

Crotoxyphos, 10.0 µg/ml, Isooctane, 10ml

Irbesartan, 10 µg/ml, Acetonitrile, 10ml

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