108038  pH Test The pH determination using indicator solutions is suited for weakly buffered water samples. The pH value is measured semiquantitatively by visual comparison of the colour of the measurement solution with the colour matching vessel. Read More »

108027  pH Test The pH determination using indicator solutions is suited for weakly buffered water samples. The pH value is measured semiquantitatively by visual comparison of the colour of the measurement solution with the colour fields of the colour card. Read More »