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

    Dec 1, 2022 · 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 developed by …

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

    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 Ammonia gas selective membrane …

  4. Nutrients - Hach

    Nutrients Featured Ammonium Articles What does the Amtax sc analyzer actually measure? For the Amtax sc and Phosphax sc what amount of reagents, standards, and electrodes are required …

  5. Technical datasheet EZ4000 Series Ammonium - support.hach.com

    Technical data - Drawings - Service packages - Order informationArticle Number

  6. User Manual NH6000sc

    May 6, 2025 · User-Manual-NH6000scEZ Series Nutrients Nutrients Manuals Process Ammonium

  7. 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.

  8. What is the cause of the 'Probe Missing' error on the Amtax sc or ...

    Jan 14, 2025 · Select 1 channel or 2 channel depending on the number of sample streams

  9. 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 reacts with …

  10. Chemistry Explained: Chemical Oxygen Demand (COD) - Hach

    Oct 26, 2022 · The final amount of dichromate is most commonly determined by direct titration using ferrous ammonium sulfate as the titrant and “ferroin” (1,10-phenanthroline ferrous sulfate) as the …