Hexavalent Chromium (Cr 6+)

epsilon-HCH, 10μg/ml in Acetonitrile, 1ml

Aqueous Ethanol Standard (1,5g/l), 10 x 1,2ml

x of 4-Nonyl- and 4-t-Octylphenols ethoxylates, 20/4µg/ml in Acetone, 1ml