Rethinking Refractometers: VST, Atago, and DiFluid; Part 2

Coffee Data Science

By Robert, Joe, & Jeremy

This is the second article in a series evaluating the DiFluid (DFT) digital refractometer to the VST and Atago refractometers. Refractometers have been used to determine the Total Dissolved Solids (TDS) in coffee by correlating the change in refractive index of the coffee at a specific temperature. Though they are the most commonly used refractometers for coffee, the VST and Atago devices are also the most costly. DiFluid has recently emerged on …

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