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o-Tolidine, 0.1%
Turbidity Stock Solution I, Hydrazine Sulfate, 1%
Zobell's Solution (ORP Standard, 220 mV)
Zinc, Granular, 20 Mesh, ACS
Sodium Hydroxide, 6.0N (6.0M)
Sodium Oxalate, 0.025M (0.05N), for Nitrogen (Nitrite)
Sodium Thiosulfate, 0.025N (0.025M)
Sodium Thiosulfate, 0.0394N (0.0394M), for Iodine Absorption Number
Sodium Thiosulfate, 0.0375N (0.0375M)
Stannous Chloride, 10% w/v
Starch Indicator, 1%, Preserved with Chloroform (Mercury Free)
Sulfosalicylic Acid, 5% w/v
Sulfuric Acid, 0.01N (0.005M)
Sulfuric Acid, 37% v/v (37+63), for Phosphorus
Sulfuric Acid, 5.0N (2.5M)
Titration (TAN) Solvent