1,2,4,5-Tetrachlorobenzene, 250mg

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

Azinphos-methyl, 100 µg/ml, Ethyl acetate, 5ml

1H-Benzotriazole, 100 µg/ml, Acetonitrile, 1ml