AMTAST Digital Refractometer Cutting Testing: A Powerful Tool for Precise Testing and Analysis Review

Works great. I work in manufacturing and use this to test bricks for pineapples, to heat peppers for heat and things like that. How it's small so I can carry it around in my pocket.

I bought this unit thinking it would be more reliable and accurate. I liked the rubber and plastic case. This proved very unpredictable and accuracy was poor. I expected more for the price. I returned it.

The product was very variable and could not be calibrated. The first reading seemed correct, but kept repeating the same number, trying to recalibrate and doing the same thing: 1 correct reading, essentially a screen freeze.