Retention Time Verification Standard

2,2',3,4,4',6,6'-Heptachloro-3'-methoxybiphenyl, 1.2ml x 50ug/ml, nonane

2,2',4,4'-Tetrachlorobiphenyl, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2437-79-8

Trichlorfon, 10.0 µg/ml, Acetonitrile, 10ml