Clean-room compatible, the Fluke Calibration 6109A and 7109A portable calibration baths claim to calibrate four times more sanitary sensors per batch with twice the accuracy of other baths in their class. Both feature a 112-mm square tank opening with a depth of 154 mm, allowing immersion of one to four sensors at a time. This includes mixtures of odd shaped sensors of varying lengths and diameters, with spare room for a reference thermometer. The display panel, keypads, decals, and feet of the baths are made from synthetic materials that don't harbor bacteria. Additionally, their stainless steel panels and tank are easy to clean, withstand harsh sterilizing chemicals, and are rust resistant. Specs include temperature ranges of +35°C to +250°C (6109A) and -25°C to +140°C (7109A) and a display accuracy of ±0.1 C that provides a 4:1 test uncertainty ratio (TUR). For more details and specs, visit http://us.flukecal.com/6109A