DGZZI 1 Roll PH Test Strips 0-14 16.4ft Alkaline Acid Indicator Meter Test Paper Roll for Water Urine Saliva Soil Litmus Accurate Testing Measuring Tool

Total length: approx. 5m/ 16.4ft PH measuring range: 0-14 Description: The test strip color changes must be matched with the pH scale color chart within seconds. Quick and easy to use. Easy to carry. Provides reliable and accurate pH readings. Appropriate for testing alkaline or acid level of any liquid. Great product to have in every lab and at home to measure and inspect water quality, urine, saliva, soil, alkaline diet, aquariums etc. Great for science education. Usage: Take out a test paper. The 2 color blocks all immersed in the liquid. After 1 second to take out, in contrast to the color of the color reading value within seconds. Scale Reads From 0 to 14: 0 - 3 indicates a very acidic substance 4 - 6 indicates an acidic substance 7 indicates neutral 8 - 11 indicates alkalinity 12 - 14 indicates a very high level of alkalinity Package content: 1 roll PH Test Paper