With these indicators suitable for the Velda Digital Water Analyser "AquaTesterPro", you can easily determine the water values in ponds, aquariums, surface water, as well as groundwater. Combined with a digital water analyser, you can measure the following water values in ponds, aquariums, surface water and groundwater quickly and accurately: pH, GH, KH, TA, NO2, NO3, Cl2, CO2. Delivery includes 25 pieces of indicators.Specifications:Dimensions: 5,5 x 5,5 x 16,5 cm (W x D x H) Tests pH, GH, KH, TA, NO2, NO3, Cl2, CO2 in fresh water Includes 25 indicator strips
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