I am very flattered that the seller is responsible for sending such a seemingly small and inexpensive item. Pros: Litmus paper does its job perfectly! Shelf life - 3 years. A hint on the use of the strips is pasted on the bag, how exactly to use them. Its cons: Unless everything is in Chinese, but the seller pasted a hint in 2022.
TDS water quality tester - TDS water hardness meter (portable digital salt meter for water analysis)
9 Review
Accurate And Versatile Digital PH Meters For Food, Brewing, Hydroponics, Pools And More!
7 Review
Portable digital multimeter with sound continuity and thermocouple (electric tester) LTX DT-838
7 Review
📊 PH 1-14 Extensive Storage Testing Monitoring: Optimize Your Storage with Precise pH Level Monitoring
6 Review
🔍 Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review
🌬️ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
8 Review
🌡️ Continuous Temperature Monitoring with Relative Humidity Integration
4 Review
Digital multimeter RGK DM-12
6 Review