GL7

Gram per gram, Helium 3 is the world’s most expensive substance. CRC’s gas-light sub-Kelvin sorption coolers have been designed to make the best possible use of this scarce resource. By buffering the ultra-cold stage with either one or two intermediate stages, we reduce the heat load on the ultra-cold head and hence lower the running temperature and lengthen the run time. As our coolers are sealed systems, no helium gas is consumed during operation and our units never need to be recharged or re-filled. Our latest design, the 300mK continuous cooler, even offers unlimited run time.

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