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

Methabenzthiazuron, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 18691-97-9

o-Aminoazotoluene,100 µg/mL,acetonitrile,1mL,

EPA Method 502.2/524.2 Volatile Standard