80 Paper strips Test & Measure PH

Must be read:
- 1 to 3 indicates a very acidic substance
- 4 to 6 indicates an acidic substance
- 7 indicates neutral
- 8 to 11 indicates alkalinity
- 12 to 14 indicates a very high level of alkalinity
NO USER MANUAL:
Touch the liquid to be tested by the end of a strip for 1 to 2 seconds, wait 10 to 15 seconds, then compare with the color chart printed on the packaging.