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  1. Ammonia vs. Ammonium – what is the difference between these

    Ammonia and ammonium are different forms of nitrogen. The major factor that determines the proportion of ammonia to ammonium in water is pH. The activity of the ammonia is also …

  2. Chemistry Explained: Hardness - Hach

    Jul 15, 2024 · Traditionally, either murexide indicator (ammonium purpurate) or Eriochrome Blue-Black R indicator is followed by titration with EDTA. CalVer 2 Calcium Indicator has been …

  3. What are the possible interferences with the Hydrogen Peroxide

    Method information: The first reagent is the ammonium molybdate solution. It consists of molybdate and sulfuric acid. The molybdate is a catalyst for the reaction, and the acid brings …

  4. MyHach - Customer Service

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  5. What is the best way to prevent contamination when doing TKN …

    Aug 6, 2022 · The process of drying the tubes can contribute to contamination. Water droplets pick up ammonium chloride from the air, they evaporate and deposit the salts on the walls of …

  6. What does the Amtax sc analyzer actually measure? - Hach

    Sep 27, 2022 · The Amtax sc analyzer adds Sodium Hydroxide (NaOH) to adjust the pH and convert ammonium ions (NH4+) to gaseous Ammonia (NH3) which passes through an …

  7. Chemistry Explained: Silica - Hach

    Aug 6, 2022 · Some forms of silica (usually polymeric) will not react with ammonium molybdate and must be digested with sodium bicarbonate to be converted to a reactive form. Silicic acid …

  8. Technical datasheet EZ4000 Series Ammonium - Hach

    Technical data - Drawings - Service packages - Order informationArticle Number

  9. CSI Specifications: AMTAX sc Ammonium Analyzer - Hach

    Complete engineering CSI specifications makes including the Amtax sc in your project easy. Includes editable Word and PDF format.

  10. Will the Ammonia (Nitrogen) Test Strips, 0-6.0 mg/L detect ... - Hach

    The Ammonia (Nitrogen) Test Strips, 0-6.0 mg/L (Product # 2755325) will not detect quaternary ammonium compounds or residues. The test strips work by raising the pH of the sample to …