Ammonia (NH3)

Ammonia Gas (NH3) is a key parameter for wastewater, reuse, and industrial applications. Ammonia limits are often set due to its toxicity to biological systems and its capacity to reduce dissolved oxygen levels. In addition to ammonia taken in through the raw influent, it can also be produced in the nitrification process.

While ammonia is important in water and wastewater treatment, the lab methods for analyzing ammonia negate the opportunity for real-time process control. Many online real-time instruments use reagent-based chemistry which, by their nature, lead to ongoing consumable costs. The LiquID detects ammonia by measuring the bonds of the ammonia molecules using UV absorption. This high powered ‘deep UV’ monitoring enables the LiquID to monitor ammonia directly without the use of any reagents or consumables.

The LiquID Station utilizes optical ammonia detection capability, but with additional advancements for added reliability and sensitivity. LiquID collects a range of measurements on a cycle, about every two minutes, across the UV-V’s light spectrum, including at the frequency for ammonia detection. Compared to other instruments, LiquID operates far deeper in the UV range, utilizing more high energy light frequencies and getting better resolution in complex matrices. The result is an instrument with high sensitivity as well as reliability of matrix correction, with combined ammonia detection sensitivity below 1 part per million.

  • Parameter Detection Range/Sensitivity Accuracy
    Ammonia Gas 0.2 to 100 mg-N/L ±8%

  • To learn more about the optical approach used by the LiquID to measure NH3 please read the How It Works – NH3 located in the Library and Resources section of our website.
  • Please Contact Us if you have additional questions about measuring NH3 or general inquires into the LiquID Station.