The VST Lab Coffee digital refractometers for coffee & espresso TDS are advanced fourth-generation handheld instruments that put laboratory precision in the palm of your hand. Accuracy and precision of the VST Lab coffee refractometers are comparable to state-of-the-art dehradration ovens, and rival benchtop laboratory refractometers with Peltier trays. VST's latest Lab Coffee refractometers achieve typical accuracies of +/- 0.03% and precision of +/- 0.2%.
Designed for the rapid and accurate determination of coffee concentrations, these instruments will automatically correct for temperature within the range of 15-40 degrees celcius. When used and cared for properly, the refractometer will provide years of trouble-free service.