Crotoxyphos, 1000µg/ml in in hexane:acetone [9:1], 1ml

2,2',3,4,4'-Pentachlorobiphenyl,100 µg/mL,isooctane,1mL,

Heneicosanoic acid, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2363-71-5

3-Methylcholanthrene