DescriptionSimply plug it in, turn it on, and put the sample in. The TCL-12 can keep your sample at low temperatures for long periods. No hassle, no contamination, and excellent value for money! 20 sample compartments in each block, sizes from 0.2 ml to 2 ml, simply change format of the compartments when you need different sizes. The unit can also use the ceramic-coated aluminum beads to accommodate various sample vials at the same time. The TCL-12, with display and settings can adjust temperature from 0°C (32ºF) to any set-point lower than room temperature.