
Unlike the HI 729 Fluoride Test, this one is very simple. You zero the instrument with a sample before adding the reagent. You then add the powdered reagent and run the test. I think you have to wait 2 minutes 30 seconds for results. (Perhaps this seemed easy once I fully understood how to get accurate fluoride test results.)

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

TDS water quality tester - TDS water hardness meter (portable digital salt meter for water analysis)
9 Review

80 Pieces Water Test Litmus Strips Litmus ph Paper Soil Acidity Meter Liquid pH Tester 1-14
10 Review

π PH 1-14 Extensive Storage Testing Monitoring: Optimize Your Storage with Precise pH Level Monitoring
6 Review