even with VST baskets

offering strength without excess weight

rich espresso with velvety crema in under five minutes

Simple yet elegant

VST LAB Coffee III Refractometer Melitta even with VST basketsThe VST LAB Coffee III Refractometer is a tool that has been used for measuring coffee & espresso Total Dissolved Solids (TDS) to understand the efficiency and quality of brewing through extraction. VST Labs have advanced the Refractometer with the latest fourth generation that provides laboratory precision that comfortably fits into the palm of your hand. The Lab III Refractometer has an expected accuracy of + 0. 02% and worst case precision of + 0.