I recently bought a certified digital pH meter because I had problems and needed to check the pH frequently. the same solution with litmus and with a digital meter, the results differed by almost 1 ph. This is terribly unacceptable when it comes to pH reading and I am getting a full refund for all 4 rolls I purchased. Don't buy this product, it's not exact, so it's the same as using a paper towel and guessing the number
Accurate And Versatile Digital PH Meters For Food, Brewing, Hydroponics, Pools And More!
7 Review
π PH 1-14 Extensive Storage Testing Monitoring: Optimize Your Storage with Precise pH Level Monitoring
6 Review
TDS water quality tester - TDS water hardness meter (portable digital salt meter for water analysis)
9 Review
Digital PH Meter Tester - Tiaoyeer Water Quality Tester With ATC, 0.01PH High Accuracy, 0.00-14.00 Measurement Range, 0.01 Resolution For Drinking Water, Aquarium, Swimming Pools, Hydroponic
8 Review