Fonofos, 10 µg/ml, Ethyl acetate, 10ml

Potassium 11-chloroeicosafluoro-3-oxaundecane-1-sulfonate, 1.2ml x 50ug/ml, methanol

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

2,4,4',6-Tetrachlorobiphenyl ,100 µg/mL,isooctane,1mL,