These strips provide accurate colorimetric pH indication. To prevent bleeding, even in strongly alkaline solutions, the dye is covalently bound to the paper carrier on a plastic strip. Strips can be immersed in sample for extended periods, so weakly buffered solutions can be tested with accuracy. The universal strip tests the full 0-14 pH range with a sensitivity of 1 pH units. Intermediate range indicators provide a sensitivity of 0.3-0.5 pH units and narrow range strips provide a sensitivity of 0.2-0.3 pH units. Use distilled water for testing.
Also referred to as pH Strips.
Each box contains 100 strips and 1 test chart.