The VST LAB Coffee III refractometer is used for measuring coffee & espresso TDS. The advanced fourth-generation handheld instrument provides laboratory precision in the palm of your hand. Accuracy and precision of the VST Lab coffee refractometers are comparable to state-of-the-art dehydration ovens, and rival benchtop laboratory refractometers with Peltier trays. VST's latest Lab III refractometer has a typical accuracy of +/- 0.02% and worst case precision of +/- 0.1%.
Designed for the rapid and accurate determination of coffee concentration, 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.
This unit comes with the software.
| Coffee | Espresso | Coffee & Espresso | |
| Range | 0.00 - 9.99 | 0.00 - 20.0 | 0.00 - 20.00 |
| Resolution | 0.01% | 0.1% | 0.1% |
| Precision | +/- 0.02% | +/- 0.1% | +/- 0.03% |
| Accuracy | +/- 0.05% | +/- 0.1% |
0.00 - 4.99 – +/- 0.05%
5.00-20.00% – +/- 0.10% |
