Thermostats

A thermostat is a device that holds a defined temperature in a bath, block, or circulating loop, so that samples, reactions, or connected instruments stay at a set point regardless of ambient conditions. In a laboratory it covers circulating baths, dry block heaters, water baths, and standalone temperature controllers that drive an external load. The Questpair catalogue lists 631 thermostats from 20 verified suppliers and distributors across 8 countries, in new, used, and refurbished condition. Of those listings, 82 percent are used. Prices span a wide range, from benchtop controllers to high-capacity circulators, so the term covers equipment built for very different thermal loads and accuracies.