Litmus Paper pH Test Strips - 80 Strips

Each pack contains 80 strips, allowing for up to 80 individual tests, assuming one strip is used per test.

While specific expiry dates may vary, it is recommended to use the strips within one to two years of purchase, provided they are stored correctly in a sealed container in a dry, cool place.

Yes, you can test the pH of solid food by making a liquid extract or paste with distilled water, or by directly pressing the strip against a moist surface of the food.

These strips provide a good estimate of pH for general purposes, typically with an accuracy of +/- 1 pH unit. For highly precise scientific applications, laboratory-grade equipment may be required.

pH measures the acidity or alkalinity of a solution. A pH of 7 is neutral. Values below 7 indicate acidity, with 1 being the most acidic. Values above 7 indicate alkalinity, with 14 being the most alkaline.

Used test strips can typically be disposed of in regular household waste. However, if testing hazardous substances, dispose of them according to local regulations for chemical waste.

Ensure the strip is fully immersed in the liquid or has sufficient sample contact. Verify the substance being tested is aqueous and has a measurable pH. Check the expiry date of the strips.

Ensure you are viewing the strip and chart under good, natural light. Wait the full 15 seconds for the color to stabilize before comparison. If testing colored liquids, the results might be less precise.

Ensure proper storage conditions are maintained. Avoid touching the test area of the strip. Test a known neutral solution (like distilled water) to calibrate your observation against the chart.