PATIKIL PH Test Strips 4pcs 320 Indicator Papers Litmus Tester for Water Food Soil Alkaline Testing Red

Litmus papers are used to determine the pH level of a liquid and determine if a solution is basic. Widely used for industrial chemical testing, science education, laboratory use, drinking water, aquariums, and classroom analytical chemistry.

Specification
Testing Paper Size: 54mmx9mm (L*W)
Overall Size: 70mmx45mmx5mm (L*W*H)
Packing List: 4 x Litmus Test Kit (80/Pack,320pcs)

Advantage
Can be used to determine the strength of acid and base conveniently. Sensitive to the environment and temperature changes.

Instruction
Dipping the test paper into a solution and observing the change in color of the paper. After one second read the pH value. If the test paper turns blue, the solution is alkaline.

NOTE
Not applicable for oil and acid-base solutions with a concentration of less than 0.01%. Should be stored in a dry place protected from light.