Chemical Oxygen Demand

2,2',3,4,4',6'-Hexachlorobiphenyl ,100 µg/mL,isooctane,1mL,

2-Methyl-4-isothiazoline-3-one, 10µg/ml in Acetonitrile, 10ml

1,1-Dichloro-2,2-bis(4-chlorophenyl)ethane, 1.2mL x 100ug/mL, nonane