Review on 🍯 Honey Refractometer with Automatic Temperature Compensation (ATC) - Tiaoyeer Moisture, Brix, and Baume Refractometer for Honey, 58-90% Brix Scale Range - Honey Moisture Tester by Joseph Lang

Would not calibrate properly. Got a replacement and it also would not calibrate properly. Took it to a friend that was very familiar with refractometers and the problem seemed to lie with the alignment of the prism in such a way that the cover lens could not lie flat on the prism. Returned and requested a refund and ordered ebay’s choice refractometer and it calibrates and works fine. I suspect the first two I got that would not calibrate properly were from the same batch and most must work fine according to the number of positive reviews.