An atmospheric exposure chamber for small animalsThe purpose of this project was to design a long-term environmental exposure chamber for small animals. This chamber is capable of producing hypoxic, normoxic and hyperoxic atmospheres which are closely regulated. The chamber, which is of the recycling type, is fashioned after clear plastic germ-free isolators. Oxygen concentration is set and controlled by a paramagnetic O2 analyzer and a 3-way solenoid valve. In this way either O2 or N2 may be provided to the system by way of negative O2 feedback. Relative humidity is maintained at 40-50 percent by a refrigeration type dryer. Carbon dioxide is absorbed by indicating soda lime. A diaphragm pump continuously circulates chamber gas at a high enough flow rate to prevent buildup of CO2 and humidity. This chamber has been used for numerous studies which involve prolonged exposure of small animals to various O2 concentrations.
Document ID
19830029890
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Glaser, R. M. (Wright State University Dayton, OH, United States)
Weiss, H. S. (Wright State Univ. Dayton, OH, United States)
Pitt, J. F. (Ohio State University Columbus, OH, United States)
Grimard, M. (Sherbrooke, Universite Sherbrooke, Quebec, Canada)
Date Acquired
August 11, 2013
Publication Date
January 1, 1982
Subject Category
Man/System Technology And Life Support
Meeting Information
Meeting: NAECON 1982; National Aerospace an Electronics Conference