Ade Advanced Optics AO 81150 14 Refractometer Review

The product description does not mention that a gram balance must be used to prepare the calibration solution. The % scale on it does not reach 0%, which means that distilled water cannot be measured. This significantly increases the price of the product (if you don't already have a scale), not to mention increasing the time spent on the multi-step, multi-tool calibration process. To be fair, I think you could use olive oil to calibrate a refractometer, but olive oil can vary by as much as a…

I've only used it once but I've been impressed, especially given the reasonable price. It seems solid enough and it worked as intended. I like the little flat foot on the bottom that keeps it flat on the counter and prevents it from rolling away. Other reviewers point out that since 0 isn't a point on the scale, the calibration instructions don't make sense. In fact, the instructions appear to be for a different model. To calibrate this model, first prepare a standard sugar solution. Using the…

This refractometer is inexpensive so I didn't have high expectations and wasn't surprised by its unstable performance. I use a refractometer to measure the sugar content of the maple syrup I'm making this spring. I've tried calibrating the refractometer with a store-bought sample of maple syrup, but the refractometer doesn't hold up to the calibration. I will set the refractometer at 67% when I measure the syrup from the store and after 3-4 days the same syrup shows 62% or a different number. I