E-outstanding PH Paper 0-14 16.4ft Alkaline Acid Indicator Meter Test Strip Roll with Color Chart for Water Urine Saliva Soil Litmus Accurate Testing Measuring Tool

Specification: Total length: about 5m / 16.4 feet. PH measurement range: 0-14. Package Contents: 1 roll of PH test paper. Description: The color change of the test paper must match the pH scale color table within a few seconds. Fast and easy to use. Easy to carry. Provide reliable and accurate pH readings. Suitable for testing the alkaline or acid level of any liquid. Excellent products available in every laboratory and home that can measure and check water quality, urine, saliva, soil, alkaline diet, aquariums, etc. Very suitable for science education. Usage: Remove the test paper. Both color blocks are immersed in liquid. Take it out after 1 second, the reading value of the contrast color in a few seconds. Extend the reading from 0 to 14: 0-3 means very acidic substance, 4-6 means acidic substance, 7 means neutral, 8-11 means alkalinity, 12-14 indicates very high alkalinity.