For determination of Ammonia Nitrogen by the Nessler Method. USEPA accepted for reporting wastewater analysis (distillation required) using Hach Method 8038. Range: 0.02-2.50 mg/L NH3-N. Reagent set contains Nessler Reagent, Mineral Stabilizer and Polyvinyl Alcohol Dispersing Agent for approximately 250 tests.

Brown particles are common in the Nesslers Reagent, and develop over time.

This precipitate does not affect the results.