SHT1/21 Aluminium block, with removable channels for glass and disposable cuvettes, for use with Stuart block heaters. Manufactured from anodized aluminium and, all with a separate hole to accommodate a thermometer if desired. All blocks, with the exception of SH/15146 and SH/15148, have dimensions, (w x l x h) of 75 x 95 x 50mm and can be used in any combination