Aldrin, 100 µg/ml, Ethyl acetate, 5ml

Thiamethoxam, 10.0 µg/ml, Acetonitrile, 10ml

ISO 9377-2MOD Extraction Solvent Stock Solution I 20ul of n-Heptane and 20mg of n-Tetracontane solved in 1000ml n-Pentane

12-Methylbenz[a]anthracene,200 µg/mL,toluene,1mL,