EPA Method 300.0 Anions Method A

d4 C29 alpha alpha alpha (20R)-Ethylcholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no.

4,4'-Dibromooctafluorobiphenyl

4,4'-Diaminodiphenylmethane, 100 µg/ml, Acetonitr