|75% Sulfuric Acid, 0.20% Potassium Dichromate, 0.40% Silver Sulfate, 0.002%Sulfamic Acid, 0.60% Mercuric Sulfate|
|Standard COD reactor and spectrophotometer|
|16mm vial with 1.5mL digestion solution, 3.5mL catalyst solution, and screw cap|
|COD testing for 100 to 45mg/L standard range concentration|
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