QC Standard 2

2,2',3,3',4,4'-Hexachlorobiphenyl

1,1,1,2-Tetrachloroethane

alpha alpha alpha (20R,24R)-24-Methylcholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 50897-35-3