pH Test Set of 2. The pH measurement kit allows the determination of the pH over a very wide range of pH values between 4.0 and 10. The method used is colorimetric and the comparison of the color obtained is simple thanks to the colorimetric scale, which shows the corresponding concentration values. The package includes N.02 pH test bottles of 10 ml and N.02 Colorimetric scale. The pH value provides a measurement of the acidity/alkalinity of an aqueous solution and is proportional to the concentration of hydrogen ions., Manufacturer: Filtri Acqua Italia
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