delta-HCH (BHC)

(+/-)-Cotinine-d3 (N-methyl-d3), 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 110952-70-0

1-Nitropyrene-d9, 100µg/ml in Toluene, 1ml

2,5-Dichlorobiphenyl ,100 µg/mL,isooctane,1mL,