4,4'-DDD, 100 µg/ml, Toluene, 5ml

Precision and Recovery Stock Solution, 1.2ml, nonane

4,4'-Difluorodiphenylmethane, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 457-68-1

cis-1,2-Dichloroethene, 100 µg/ml, Methanol, 5ml