About 50 results
Open links in new tab
  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 influenced by ionic …

  2. Ammoniac / Ammonium : quelle est la différence entre ces deux ... - Hach

    Dec 1, 2022 · L'ammoniac et l'ammonium sont des formes d'azote différentes. Le pH est le principal facteur qui détermine la proportion d'ammoniac par rapport à l'ammonium dans l'eau. L'activité de …

  3. Chemistry Explained: Hardness - Hach

    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 Hach to replace …

  4. L’ammoniac (NH3) et l’ammonium (NH4+) sont-ils des substances …

    L’ammoniac (NH3) et l’ammonium (NH4) sont en équilibre lorsqu’ils sont dissous dans l’eau. La proportion de NH3 et de NH4+ dans l’échantillon variera en fonction de la pression, de la …

  5. 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.

  6. 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 …

  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 reacts with …

  8. What chemicals interfere with the combination pH sensor? - Hach

    Sulfide, ammonium, bromide and iodide ions are common interferences that contaminate the reference electrode in combination pH sensor.

  9. Chemistry Explained: Alkalinity - Hach

    Aug 6, 2022 · Introduction: Alkalinity is a measure of the capacity of water to neutralize acids. Alkalinity of water is due primarily to the presence of bicarbonate, carbonate, and hydroxide ions. Salts of …

  10. Ammonium - support.hach.com

    Mar 25, 2025 · Ammonium Is Monochloramine an interference when using an AISE or ANISE sensor for Ammonium readings? 471 Views • Mar 26, 2025 • Knowledge