For controlled dry heating of test tubes; microplates and Eppendorf tubes in interchangeable aluminium blocks. The following models are available: Choose from three digital systems with 1; 2 or 4 interchangeable blocks (QBD models) and one digital high-temperature system (QBH2) with 2 blocks. Fast heat-up time and in-block temperature sensing capability using external sensor probe. Please order Cat. No. 6.228 714 separately. Built-in timer; programmable delayed start and RS232 output for data monitoring. Includes block removal tool. Requires but does not include interchangeable QB-series blocks.