Hanna Instruments Mini Ammonia Checker HC Photometer

Why measure ammonia concentration in an aquarium?

High ammonium values ​​indicate disturbed or not yet fully balanced bacterial activity in the filter. Ammonia (NH3), forms from ammonium (NH4) at pH values ​​above 7 and is particularly dangerous. Ammonia values ​​of 0.02 mg/L are sufficient to cause long-term gill damage. Levels above 0.01 mg/L (ppm) have a negative effect on aquarium hosts. It is essential to measure the pH in addition to the NH4 value. The evaluation and assessment of the measured values ​​is done using the table below.
Calculation of toxic ammonia (NH3)

To determine the amount of ammonia NH3, multiply the value of total free ammonia (NH3/NH4+) displayed by the photometer by the percentage of ammonia indicated in the table below.
Example: pH 8.0, temperature: 24°C, NH3 / NH4+ 1.00 mg/L (ppm)
Concentration of toxic ammonia: 1.00 mg/L (ppm) x (5.0 ÷ 100)= 0.05 mg/L (ppm)
Percentage of ammonia (NH3)
pH 21°C 24°C 26°C 29°C
7.6 1.7 2.1 2.4 2.9
7.8 2.6 3.2 3.7 4.5
8.0 4.1 5.0 5.8 7.0
8.2 6.3 7.7 8.8 11
8.4 9.7 12 13 16
8.6 15 17 20 23
8.8 21 25 28 32

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To facilitate your calculations, we suggest you download our "Ammonia calculator"
The strong points

    Attractive price
    Quality, fast and accurate measurements
    Very easy to use (1 button)
    Lightweight and compact, fits in any pocket
    Measurements in accordance with approved methods
    Large reading screen
    Robust and practical