80 Dải GiấY Quỳ thử độ pH quỳ Giấy thử toàn dải 1-14 pH có tính axit kiềm chỉ số phổ Giấy thử Dải giấy dụng cụ kiểm tra PH hộp cá hồ bơi dụng cụ kiểm tra nước

• Instructions:
• 1. Tear off the test strip, take a drop of the solution to be tested and drop it on the test strip, the solution and the strip have a color reaction, and then compare with the color card to get the pH value. Note: Please do not put the strip directly on the test strip. Into the solution, but dip a drop with something.
• 2. This test paper is not suitable for very weak buffer solutions and acid-base solutions with a concentration of less than 0.01%.
• 3. This test paper needs to be stored in a dry place away from light.
• First: use it to measure the pH of cosmetics, weak acid is the best! ! ! (The pH value is best between 5 and 6)
• Second: You can use it when doing laundry! (As long as the water in the last wash is neutral! The pH value is at 7)
• List:
• Reminder: Due to the different shooting angles and monitors, there may be color difference, and everything is subject to the actual product; the size is measured manually, and there may be a little error.
• Tear off a test strip, take a drop of liquid with a glass rod or dropper, drop it on the PH test strip, wait for a few seconds, observe the color change and compare it with the color card, and get a warm reminder of the result
• ①Do not soak in liquid, it will cause the reagent components to be scattered and affect the test
• ②Do not place it on tables and chairs, and contact other acid and alkali components, which will affect the test
• What is the pH value? PH value<7=acidic, PH value<7 is acidic (the smaller the value, the more acidic), PH value=7 is neutral, PH value>7 is alkaline (the larger the value, the stronger the alkalinity)