Block heaters and coolers complete procedures required within molecular biology, histology, environmental, and industrial laboratories. The devices achieve temperature stability and repeatable results when incubating cultures, chilling plasma samples, or activating enzyme reactions. Sold separately, the modular blocks are interchangeable and come in a variety of options to hold samples. Benchtop block heaters and coolers feature space-saving designs to stow away neatly and permit more working room for personnel when in use.