Inexpensive device maintains water at 0.01 degree C for 10 weeks or longer. New device consists of four basic assemblies; small, commercial chest freezer containing insulated water tank; insulated copper cell holder; "ice switch" for cycling freezer compressor and externally-mounted air pump for circulation. Access hole in freezer lid allows triple point measurements without opening lid. Modified freezer used to calibrate standard platinum resistance thermomenters.
Device Maintains Water At The Triple Point
NASA Tech Briefs ; 12 , 7
1988-07-01
Miscellaneous
No indication
English
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