The KR Series Coolers offers four low-temperature units that can be used to achieve low temperature capability with non-refrigerated circulators or boost the cooling capacity of refrigerated circulators. Providing continuous cooling as low as -45 C, the units offer lab personnel an economical alternative to dry ice and liquid nitrogen. Units are also suited for use with solvent traps, freeze point apparatus, impact testing, lyophilization and other applications. Models 50 and 80 are immersion style coolers and can reach down to -35 C and -45 C respectively. Both come equipped with a rigid coil immersion probe. Flow-through models 30 and 60 are for inline use with a circulator pump. They achieve temperatures of -20 C and -25 C. All units operate at maximum cooling capacity.