ISIS Semi-quantitative ion test paper

The ion concentration is measured semi-quantitatively using the discoloration reaction between the test strip containing the indicator and the ions present in the sample solution.
The measurement method is to immerse the cellulose discoloration part that is pressure-bonded to the tip of a PVC (polyvinyl chloride) test paper in the sample solution, and compare / collate the degree of discoloration with the color scale (discoloration table) attached to the container. ..
The discolored part and the color scale are the same size and long enough to make it easier to judge the comparison / collation, so even harmful solutions can be measured safely.
High-concentration solutions that exceed the measurement range should be diluted, and if the pH value exceeds the measurable value or if interfering ions are present, appropriate removal treatment is required.
The lid has a structure that can be confirmed as opened, and has a molecular sieve to prevent wetting inside.