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This test stick can be used to quickly and easily determine the carbonate hardness or alkalinity of water, e.g. in swimming pools and aquariums. A reliable result is obtained within 30 seconds. The carbonate hardness corresponds to the proportion of the total hardness that can lead to the formation of scale.- Measuring range: 0 - 3 - 6 - 10 - 15 - 20 °d- Sufficient for: 100 determinations- Shelf life: at least 2.5 years from production- Colour reaction: light green ? blue?- Result after just 30 seconds- PU = 100 sticks, 6 x 95 mm
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