Nitrit (NO2) ist ein Anion, das aus Stickstoff und Sauerstoff besteht und in vielen natürlichen und synthetischen Materialien vorkommt. Nitrit ist in der Wasseraufbereitung und -analyse von Bedeutung, da es ein wichtiger Indikator für die Wasserqualität ist und in erhöhten Konzentrationen negative Auswirkungen auf die Umwelt und die Gesundheit von Tieren und Menschen haben kann.
In der Wasseraufbereitung kann Nitrit aufgrund seiner Fähigkeit, mit Chlor zu reagieren und dabei toxische Nitrosamine zu bilden, zu einem potenziellen Problem werden. Nitrit kann auch als Indikator für eine unzureichende Chlorung oder Desinfektion im Wasserbehandlungsprozess dienen.
In vielen Ländern werden Grenzwerte für Nitrit im Trinkwasser festgelegt und überwacht, um sicherzustellen, dass das Wasser sicher und gesund ist. Nitrit wird typischerweise mittels der Griess-Ilosvay-Methode oder der Spektrophotometrie gemessen.
Nitrit kann aus verschiedenen Quellen in das Wasser gelangen, wie bspw. aus menschlichen Aktivitäten wie der Düngung oder aus natürlichen Quellen wie organischen Materialien im Wasser. In einigen Fällen kann Nitrit nützlich sein, bspw. als Konservierungsmittel in Fleischprodukten. Jedoch ist eine Überlastung mit Nitrit in Lebensmitteln oder Trinkwasser ungesund und kann ernste gesundheitliche Auswirkungen haben.
Refill pack: Testoval Nitrite Reagent for the rapid manual analysis of nitrite levels in water within the concentration range 0–1 mg/l NO₂. With the refill pack for the Testoval Nitrite Test Kit, you can easily continue using your existing kit. The reagents ensure that you can continue to reliably test the nitrite content in the water without having to buy a new test kit. Fresh reagents for accurate nitrite measurements The refill pack contains a complete set of reagents for the Testoval Nitrite Test Kit. The reagents are required to produce a colour reaction in the water sample; only then can the nitrite value be read on the colour comparison device. The reagents are only suitable if you already own a nitrite colour comparison device. They are not suitable for testing without the colour comparison device. Easy refilling of reagents Once the existing chemicals have been used up, they can simply be replaced with this refill pack. The test then works just as usual. The reagents allow for approximately 100 further analyses, each taking around 15 minutes to complete.
The Testoval Nitrite Test Kit is an analysis kit that allows you to determine the nitrite content in water visually by comparing colours. Simple nitrite test for your water samples With the Testoval Nitrite Test Kit, the nitrite content in water can be tested easily and visually. Water is poured into a cuvette of the test kit, the reagents are added, and the colour change in the water is then observed. The individual values of 0.05 mg/l, 0.1 mg/l, 0.2 mg/l, 0.3 mg/l, 0.5 mg/l and 1 mg/l can be read by visual colour comparison. By diluting the water sample in a ratio of 1:10 with distilled water, the measurement range can be extended to 10 times the concentration. This method is particularly suitable for quick on-site checks, e.g. in swimming pools, fountains or technical installations. Features of the test kit? The test kit allows you to determine the nitrite content in water without technical measuring equipment or electricity. It provides a measurement result within approximately 15 minutes. With one test kit, you can carry out approximately 100 analyses.
Testoval Nitrite Colour Comparison Kit or Replacement Colour Comparison Kit (without cuvette), for rapid manual analysis of the nitrite content in water within the concentration range 0–1 mg/l NO₂. The Testoval Nitrite Colour Comparison Device is the ideal measuring instrument for nitrite tests using reagents. It allows water samples to be analysed quickly and clearly by comparing the resulting colour directly with a scale. Precise analysis of the nitrite test The nitrite colour comparison device is designed to reliably read the colour reaction of a water sample. Once the water has been mixed with the reagents, a specific colour appears, and it is precisely this colour that can be compared with the integrated scale. This allows the nitrite content in the water to be reliably determined. Suitable for Testoval reagents and test kits The colour comparison device is specifically designed for the Testoval system and only works in conjunction with the appropriate reagents and test kits. It is an essential part of the measurement process, helping to ensure the results are read correctly.