beta-HCH, 100 µg/ml, Acetonitrile, 5ml

Turbidity Standard (100 NTU)

2,7-Naphthalenedicarboxylic acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 2089-89-6

Pirimiphos-methyl, 100 µg/ml, Toluene, 1ml