Thermo Scientific Eutech Elite pHSpear is a deluxe waterproof compact pH meter that offes 0.01 accuracy, auto calibration, ATC, temperature display, backlit dot matrix display, data-hold, auto power-off, self-diagnostic messages and user-replaceable sensor module for extended meter lifespan. Spear-tip sensor allows low-volume sample measurement (fits into micro-centrifuge tubes to long narrow tubes) to direct contact measurement onto semi-solid samples (like cheese, fruits, etc)