Quinalphos, 100 µg/ml, Ethyl acetate, 1ml

Chromium (Cr), 1µg/ml in 2%-HNO3/Water, 4 x 25ml

Perfluorodecane sulfonic acid,50 µg/mL,MeOH,1mL,

Clomethiazole, 1000µg/ml in MeOH, 1ml