EPA Method 528 Fortification Solution

6-Methyl-2',3,4,6'-tetrachlorodiphenylmethane

2-Cyclohexyl-4,6-dinitrophenol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 131-89-5

DNPH - Mix 4, 100µg/ml in Acetonitrile, 5ml