EPA Method 507/525 Analyte Mix #1

2,2',3,3',4',5,5'-Heptachloro-4-biphenylol, 1.2ml x 50ug/ml, nonane

Bis(2,3-dibromopropyl)phosphate, tech., neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 5412-25-9

5-Chloro-2-(2,4-dichloro[13C6]phenoxy)[13C6]phenol, 1.2ml x 50ug/ml, methanol