2-Chloro-4-methylsulfonylbenzoic acid, 100mg

Mass-Labelled HCH Solution/Mixture, 2µg/ml in Nonane, 1,2ml

2,3,3',4',6-Pentachlorobiphenyl, 100µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 38380-03-9

9-Hydroxy-9-n-methylfluorene