BHC (beta isomer-13C6), 50µg/ml in Nonane, 2x1,2ml

1,2,3,7,8-Pentachloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

Fenthion-oxon-sulfone, 10.0 µg/ml, Acetonitrile,

Demeton O, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 298-03-3