EPA Method 8330 Analyte

Caffeine-d3 (1-methyl-d3), neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 26351-03-1

Ethyl-ß-D-6-glucuronide-d5, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no.

Pyrazophos, 10.0 µg/ml, Ethyl acetate, 10ml