Biological Fluid Osmotic Pressure Determinations

Authors

E. C. McCracken, Iowa State CollegeFollow

Document Type

Research

Abstract

An outgrowth of the method used by A. V. Hill to determine the next liberation accompanying the passage of a nerve impulse has resulted in the development of an apparatus by which the osmotic pressure of as small quantities of fluid as .5 cu. mm. may be determined to an accuracy of .1 per cent NaCl. The principle consists essentially in the differential cooling effect produced between the experimental sample and a standard solution when placed in a standard, constant temperature, constant humidity environment. A discussion of the necessary thermocouple loop construction, electrical difficulties, and optical system is included in the report.

Publication Date

1936

Journal Title

Proceedings of the Iowa Academy of Science

Volume

43

Issue

1

First Page

270

Last Page

270

Copyright

©1936 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

Recommended Citation

McCracken, E. C. (1936) "Biological Fluid Osmotic Pressure Determinations," Proceedings of the Iowa Academy of Science, 43(1), 270-270.
Available at: https://scholarworks.uni.edu/pias/vol43/iss1/83