It is designed for precise and repeatable temperature control in laboratory applications. Accommodating one interchangeable modular block, it delivers exceptional temperature uniformity and stability for incubation, enzyme reactions, immunoassays, nucleic acid denaturation, and other laboratory procedures. An integral support rod holder with locking knob accepts an optional External Temperature Probe Kit for monitoring actual block or sample temperature. Each block accommodates tube sizes from 0.2 mL microtubes up to 50 mL centrifuge tubes and includes a thermometer well for accurate block temperature measurement.