EPA Method 552 Internal Standard

Glycerol-d5, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 62502-71-0

Endosulfan-sulfate, 10.0 µg/ml, Ethyl acetate, 1

Ethyl-ß-D-6-glucuronide-d5, 1000µg base/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no.