Parathion-methyl, 100 µg/ml, Ethyl acetate, 5ml

Method 429 Native PAH Stock Solution, 1.2ml, isooctane

Chlorpyrifos-methyl, 100µg/mL, Solvent-hexane, Unit 1mL, # of units-1, Cas.no. 5598-13-0

2,2',3,4',6'-Pentachlorobiphenyl (= 2,2',3',4,6-),100 µg/mL,isooctane,1mL,