EPA Method 528 Internal Standard

Chlormequat-chloride D4, 100µg/mL in DO, 1ml

D3-TFNG, 100 µg/ml, Acetonitrile, 1ml

4,4'-Dihydroxybiphenyl, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 92-88-6