Triisobutyl phosphate, 100 µg/ml, Methanol, 5ml

Endosulfan-sulfate, 100 µg/ml, Ethyl acetate, 5m

Calibration Standard Mix 4

Ethion, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 563-12-2