
We must look at the color of the wet paper. After drying, the color is lost. Tried on different water (pool, filtered water, tap water) Color is different everywhere Instruction Clear - dipped, looked.
I wanted to share some photos to provide more context to my review.




Efficiently Test Your Antifreeze And Battery Acid With A 3-In-1 Refractometer
18 Review

🍯 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

💧 Enhanced Water Analysis: HM Digital HydroTester Offers Unparalleled Resolution and Accuracy
6 Review

Portable digital multimeter with sound continuity and thermocouple (electric tester) LTX DT-838
7 Review

Portable Handheld Manometer 📏 for Accurate Pressure Differential Measurement
5 Review

🌡️ Continuous Temperature Monitoring with Relative Humidity Integration
4 Review

🔍 Dioxide Controller for Digital Gas Monitoring
5 Review

🌬️ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
8 Review