New ISO standards for nitrogen parameters in tube tests

Our NANOCOLOR tube tests for the determination of ammonia, nitrate and total nitrogen are conform to the newly published ISO standards.
These standards were specifically developed for determining the water quality with small-scale sealed tubes.

In particular, these new standards are:
1) ISO 23695:2023-02: Water quality — Determination of ammonium nitrogen in water — Small-scale sealed tube method

This standard method specifies the determination of ammonium in drinking water, groundwater, surface water, wastewater, bathing water and mineral water with measuring ranges from 0.01–1800 mg/L NH₄-N.

2) ISO 23696-1:2023-02: Water quality — Determination of nitrate in water using small-scale sealed tubes — Part 1: Dimethylphenol colour reaction

This standard method specifies the determination of nitrate in natural water, drinking water and wastewater with measuring ranges from 0.10–225 mg/L NO₃-N.

3) ISO 23697-1:2023-02: Water quality — Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes — Part 1: Dimethylphenol colour reaction

This standard method specifies the determination of total bound nitrogen in groundwater, surface water, and wastewater with measuring ranges from 0.5–220 mg/L N


These new standards provide clear guidelines and procedures for accurately measuring various nitrogen parameters in water samples. They are of great importance to environmental experts, laboratories, and companies involved in water monitoring. By adhering to these standards, our customers can be sure that our NANOCOLOR test kits are precise, reliable, and comparable.

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