Calibration Std. #2

Chlorpyrifos-methyl, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 5598-13-0

EPA Method 551.1 Surrogate Standard

AHTN (Tonalid), 100 µg/ml, Cyclohexane, 5ml