Tartarcheck is an instrument for monitoring a wine's tartaric acid stability, which allows us to determine the level of cold stability of a wine. This analysis provides a higher level of assurance that the wine is cold stable to the level measured
(32oF). Tartarcheck works on the principle of maximizing THK precipitation when adding it in excess as fine crystals to the wine and accurately measuring the change in conductivity. See before treatment graph here and an after treatment
here.