With similar operation to the BioClave Mini and BioClave 16, the new Benchmark Scientific B4000-28-220 28 liter Research Sterilizer features an increased chamber size with a diameter of 32 cm. With this larger internal chamber, the B400028220 BioClave 28 is our only model capable of sterilizing 1 and 2 liters flasks (and bottles). Despite the increased chamber size, the unit is still relatively compact, suitable for benchtop use.

Operation is fully automatic, meaning all segments of operation (fill, sterilize, exhaust and dry) commence and run to completion by simply pressing "Start". An optional thermal mini-printer is also available for providing a record of sterilization parameters. In addition, a built in USB port allows for transfer of these parameters to a computer for printing or storage of cycle data.

Both BioClaves offer three cycle options (standard programs), which are preset for the sterilization of liquids, wrapped instruments or unwrapped instruments/plastic ware. A "Dry Only" option is also available for additional drying time to be added to the end of a cycle. For special applications, requiring variations in cycle parameters, all settings on the BioClaves are fully adjustable.