Indicator Set - pH, Nitrite, Nitrate, Water Hardness

€61.90tax excl.VAT incl.: €74.90

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Set of indicators for measurement in accordance with TRGS 611 standard. Contains 100 strips of: ■ pH indicator ■ Nitrite indicator ■ Nitrate indicator ■ Hardness indicator

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■ pH indicator Immerse the test strip in the emulsion and wait a few seconds. Then place it next to the "Colour Chart" comparison table and check the result. ■ Nitrite indicator Immerse the test strip in the emulsion and wait approx. 30 seconds. Then place it next to the "Colour Chart" comparison table and check the result. The presence of nitrite ions is confirmed when a colour change to reddish occurs. ■ Nitrate indicator Immerse the test strip in the emulsion and wait approx. 30 seconds. Then place it next to the "Colour Chart" comparison table and check the result. The presence of nitrate ions is confirmed when a colour change to reddish occurs. ■ Hardness indicator Immerse the test strip in the emulsion and wait approx. 30 seconds. Then place it next to the "Colour Chart" comparison table and check the result. In the event of a colour change, the water hardness can be determined.