Ready for immediate dip and read processing, indicator papers determine the contents of a sample through simple colour comparisons with supplied charts. Saturated with a mixture of several reagents, the fast-acting quantitative detectors provide accurate colorimetric answers. The sharp colour appearance facilitates routine pass-or-fail assessments. While universal litmus indicator papers provide acidity or alkalinity readings, graduated tests give specific element levels. Use these compact tests in the laboratory or on-site.