I've been using it for over a year and I depend on it. It has been heavily used and the clear plastic hinge has broken. The warranty had expired, but the General Tools guy was able to find an extra part and shipped it to me. I would order another one from this seller and will probably come back at some point. I use it to check the mineral and sugar levels in my garden vegetables. I love high diamond plants that grow in mineralized soil. I still haven't figured out how to get this refractometer to the local farmers market and test the quality of the produce without offending pretty much everyone.
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