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STANDARD METHODS
Description Range Method
Potassium 0.0 to 20.0 mg/L Tetraphenylborate
Silica LR 0.00 to 2.00 mg/L Heteropoly Blue
Silica HR 0 to 200 mg/L EPA
Silver 0.000 to 1.000 mg/L PAN
Sulfate 0 to 150 mg/L Barium Chloride
Surfactants, Anionic 0.00 to 3.50 mg/L EPA 425.1
Zinc 0.00 to 3.00 mg/L Zincon