EPA Method 624 Standard

Paraoxon-ethyl, 10.0 µg/ml, Acetone, 10ml

Coumarin, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 91-64-5

2,2',3,4',5,6,6'-Heptachlorobiphenyl (188)