
I have used refractometers in my previous jobs. Maple syrup is new to me so can't speculate on accuracy, it's an easy read. I suggest you practice. After I made the syrup, I read that you measure it hot and cold. Just for your information.

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

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

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

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