5m roll pH test paper level strips measure saliva in water

Features: 1. Wide range of uses: You can determine the pH of any liquid, such as human urine, saliva, drinking water, swimming pools, juices, etc. 2. Extended pH spectrum: The pH test paper has a full pH range, can measure pH values from 0 to 14, and is easy to read. 3. Easy to use: Take out a small test strip, dip it into the test solution for half a second, and then compare it to the standard color on the chart to get the result. 4. Sufficient length: Our pH test paper comes on a 5-meter roll, which allows for approximately 250 measurements (at 2 cm per measurement). 5. Portable: Compact and lightweight round design, easy to use and carry. Specifications: Specification: 5m/roll Test range: pH 1-14 Shelf life: 3 years Reading scale from 0 to 14: 0-3 means strongly acidic 4-6 means acidic >7 means neutral 8-11 means alkaline 12-14 means strongly alkaline Package list: 1 roll of pH test paper