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

Furathiocarb, 10.0 µg/ml, Acetonitrile, 10ml

Benzo[k]fluoranthene-d12, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 93952-01-3

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