If they work, they're great. Unfortunately I bought 4 of these for our joint business because my co-workers keep dropping our PH meters. The first worked, the second worked, then we got to the third and bam, not good. Grabbed the fourth, not good again. The return period had expired so I couldn't return it. It does not involve any extra costs. Get what you need and make sure it's good right out of the box.
TDS water quality tester - TDS water hardness meter (portable digital salt meter for water analysis)
9 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
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