Measuring range: 0,02 - 3,0 mg/l
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Resolution: 0,03 mg/l
Ammonium is the result of nitrogen mineralization, in which bound nitrogen from food residues and excrement is converted into NH4+ by bacteria. Depending on the pH value, there is a balance between ammonium ions NH4+ and ammonia NH3 in the water. At pH values less than 7, the largely harmless ammonium ions dominate, while at pH values above 7, ammonia increasingly occurs. Ammonia is very dangerous because it affects the breathing of living beings. It easily penetrates cells, increasing pH and blocking vital functions. In a healthy and well-established tank, ammonium ions are quickly oxidized by nitrifying bacteria via nitrite to nitrate. If this process chain is disrupted, a sudden increase in the ammonium concentration can occur. Therefore, the ammonium/ammonia concentration should be checked, especially in new pools.
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This test measures the total ammonium/ammonia concentration. For freshwater areas, under normal conditions, a total ammonium/ammonia concentration of 0,1 mg/l is considered normal, although an upper limit of 0,5 mg/l should not be exceeded. The total ammonium/ammonia concentration in seawater should be less than 0,05 mg/l. What is crucial, however, is the pure ammonia concentration, which results from the total ammonium/ammonia concentration depending on the temperature and the pH value.