Method 508 Calibration Standard

Endrin, 100µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 72-20-8

4-Ethylphenol, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 123-07-9

S-Metolachlor Metabolite CGA 37735, 100mg