10 PCS 80 Strips PH Test Paper Indicator Litmus Paper Water Pollution Kit 1. Product name: PH test paper 2. Packing method: Sealed with plastic film, each pack 80 sheets with standard color card 3. Effective range: 1-14 4. Method of use: drop or smear the liquid to be tested on the PH test paper, it can be reflected and displayed almost without waiting, and then compared with the attached standard color chart to get the PH value. 5. How to use pH test paper 1-14 6. Step 1: Open the strip-shaped piece of paper exposed by the test bag, the paper sheet is pH test paper, and there are 1-14 color cards on the surface of the box. 7. Step 2: Remove the test strip and place it flat on a dry glass or plastic sheet (Note: the glass or plastic sheet must be dry and clean); 8. Step 3: Use a glass rod or pipette to take the test solution and drop it on one end of the test paper; 9. Step 4: After one second, the solution part of the test paper and the test paper produce a color change. At this time, compare with the standard color card and read the pH value. In the test, the lower the pH value, the stronger the acidity of the solution. When the pH value is 7, the solution is neutral, the greater the pH value, the stronger the solutions alkalinity; 10. Cosmetic test: Because the pH of the skin is about 6, it is a weak acid, so the pH of the cosmetic is about 6 so that it does not damage the skin pH balance, so the pH value is close to 6 without harming the skin. 6, ph is very good between 5 and 7), Cosmetics are applied on the test strip, and then the closest color is found by comparing the color chart, and the pH is obtained. 11. Test for amniotic fluid: The urine and vaginal discharge of most people are acidic, while the amniotic fluid is alkaline. (Take a vaginal secretion with a sterile cotton swab, apply it on a test paper, and compare the color chart to find the closest color, pH 7 The above indicates amniotic fluid; if it does not change color, it means that it is not amniotic fluid.) 12. Measure the pH of