They didn't work like it was nothing more than yellow paper. Tried them with known different sources of liquid and none of the streaks turned any color other than wet yellow. boo
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
80 Pieces Water Test Litmus Strips Litmus ph Paper Soil Acidity Meter Liquid pH Tester 1-14
10 Review
π― Honey Refractometer with Automatic Temperature Compensation (ATC) - Tiaoyeer Moisture, Brix, and Baume Refractometer for Honey, 58-90% Brix Scale Range - Honey Moisture Tester
31 Review
π PH 1-14 Extensive Storage Testing Monitoring: Optimize Your Storage with Precise pH Level Monitoring
6 Review
π Dioxide Controller for Digital Gas Monitoring
5 Review
π₯ Advanced Testo Wireless Hot Wire Anemometer Technology
4 Review
π‘οΈ Continuous Temperature Monitoring with Relative Humidity Integration
4 Review
Portable Handheld Manometer π for Accurate Pressure Differential Measurement
5 Review