With temperature ranges of -10 to 100°C and -20 to 100°C, respectively, EchoTherm™ Models IC30 and IC30XT can freeze, chill, or heat samples in variety of sample blocks that can hold 0.2–50 mL centrifuge tubes, test tubes, vials, assay plates, and round-bottom flasks. Measuring 8.5 x 10 x 4 in., Peltier-driven units feature digital display and control to 1°C, 30-day countdown timer in hours/minutes/seconds, data logger, and RS232 I/O port to collect data or to control units by computer.