COD Calibration Standard

2-Hydroxyibuprofen, 100 µg/ml, Acetonitrile, 1ml

4-Methoxybenzoic acid methyl ester, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 121-98-2

beta-HCH, 100 µg/ml, Ethyl acetate, 5ml