Abstract
SEVERAL writers have recently discussed in NATURE1,2,3 methods for the determination of the moisture content of small samples of biological material. It has occurred to us that the method we have described4 for the measurement of moisture in electrical insulating materials might be of great use in this connexion. In brief, the method consists of the removal of moisture from the specimen in vacuo the moisture being retained in the specimen during the initial evacuation by cooling in solid carbon dioxide. The moisture removed on heating the sample to a constant temperature is then measured by observing the water vapour pressure produced at atmospheric temperature in a globe of known volume. Complete removal of the water is not attempted, but a graphical extrapolation is used to determine the total moisture content from the measured equilibrium water vapour pressure.
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References
Lowndes, A. G., NATURE, 148, 594 (1941).
Holt, P. F., and Callow, H. J., NATURE, 148, 755 (1941).
Warne, L. G. G., NATURE, 148, 756 (1941).
Vincent, R. S., and Simons, A., Proc. Phys. Soc., 52, 489 (1940).
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VINCENT, R., SIMONS, A. Determination of Moisture. Nature 149, 170 (1942). https://doi.org/10.1038/149170a0
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DOI: https://doi.org/10.1038/149170a0
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