50-Piece Chlorine pH Test Strips Swimming Pool Water Tester Paper for Total Hardness/Total Chlorine/Free Chlorine/Bromine/pH/Total Alkalinity/Nitrite 7-in-1 Test Strips Spa and Pool Test Strips

Highlights

•  Tests for free chlorine, bromine, pH, total alkalinity, and total hardness.After taking out the required amount of test paper, seal the remaining test paper and store it away from light.
• PH test papers are a convenient tool used to measure the acidity or alkalinity of a substance. They consist of a small strip of paper that has been impregnated with a pH-sensitive indicator.
• The test paper changes color when it comes into contact with a solution with a different pH value, allowing for a quick and easy visual of the solution's acidity or alkalinity.
• Ph 1-14 color chart in each pack,and each pack is attached with a color comparison card, which indicate different Ph values correspond to specific colors.
• Normally, the solution of the test paper will change color immediately after contacting the test paper for 1-2 seconds，The test strip color changes must be matched with the pH scale color chart within about 15 seconds.
• Please do not dip the PH strips in the test liquid. It might lead to incorrectly showing test result. Please drop the test liquid on the PH strips. It will perfectly indicates the real acidic or alkalinity substance.