Instructions were wrong. It mentioned using distilled water and setting it to zero. There is no zero. Googled and found out to use olive oil to calibrate to 71.5. Once that was done. Voila. It just needs to have updated instructions.
ο»Ώ
Accurate And Versatile Digital PH Meters For Food, Brewing, Hydroponics, Pools And More!
7 Review
TDS water quality tester - TDS water hardness meter (portable digital salt meter for water analysis)
9 Review
Portable digital multimeter with sound continuity and thermocouple (electric tester) LTX DT-838
7 Review
π PH 1-14 Extensive Storage Testing Monitoring: Optimize Your Storage with Precise pH Level Monitoring
6 Review
Portable Handheld Manometer π for Accurate Pressure Differential Measurement
5 Review
π¬οΈ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
8 Review
π Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review
π§ UEi Test Instruments DAFM3B Digital Multimeter
6 Review