pH-Indicator Solutions for Water and Soil Samples
Liquid pH-indicators by MilliporeSigma for rapid and accurate results in colorless and clear test solutions. They are well suited for measurements in drinking water, boiler water, wastewater, surface water, aquarium water, swimming-pool water, and soil samples. When liquid pH-indicators are used, the test solution should be colorless and clear, whenever possible. Should the sample have any slight intrinsic color, test kits including a sliding comparator can be used. In many cases strongly turbid and/or colored solutions can be made colorless and clear for measurement by filtration or treatment with activated charcoal.