The Alkali ScientificBSH5002-2B myBlock ll - digital dry bath with 2 Quick-Flip blocks (BSWCMB) truly pioneers in the industry as it includeds options for setting timed cycles or running continuously advanced microprocessor controls and a hinged lid that can be taken off Also you have the choice of including an external temperature feedback probe which can be placed in the sample tube to give you real-time monitoring and control of your samples temperature The Alkali ScientificBSH5002-2B myBlock ll - digital dry bath with 2 Quick-Flip blocks (BSWCMB) see through lid provides better consistency in temperature and greatly lessens the formation of different temperature layers (stratification) by preserving a warm air jacket layer In addition there is a reduction in energy use because it decreases the energy that escapes to the surrounding area The lid is hinged and can be removed with little effort or it opens towards the back to allow for larger tubes This new product has the ability