Description
Potassium Dichromate, 0.25 N Solution, For COD, APHA , is a certified American Public Health Association’s (APHA) solution for the determination of COD. As an APHA certified solution, this item meets the ASTM D1209 standards for use in water and waste water treatment facilities to determine the concentration of dissolved and particulate materials. LabChem Inc. manufactured APHA grade products meet the toughest regulatory standards for quality and purity.