Omega's new TCL-10 series is simple to operate and can keep your sample at a low temperature for long periods. Cooling causes no mess or contamination. 20 sample compartments are in each block, sizes 0.2 ml to 2 ml and the compartments can easily be changed when different sizes are needed. The unit can also use the ceramic-coated aluminum beads to accommodate various sample vials at the same time. There are 2 different models: TCL-11 the analog device and TCL-12 the digital device. Ideal for laboratory and pharmaceutical.