Each pH test strip has a central segment of indicator dye and, printed alongside, eight or more different colour segments marked with corresponding pH values for matching purposes. The pH test value can be read by direct comparison of the pH test strip colour against the integrated colour bars. pH indicator strips with integrated comparison bars are excellent for coloured solutions so that any changes in the colour of the paper stock are automatically disregarded.
This product has met the following criteria to qualify for the following awards: