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Bacteria Sensor for Reprocessed Water - Microbiological Research, Design, and Fabrication

Report Number: AMRL TR 68-173
Author: Geating, John A.
Author: Rudek, Fred P.
Corporate Author: General Electric Company
Laboratory: Aerospace Medical Research Laboratory
Date of Publication: 1969-02
Pages: 70
Contract: F33615-67-C-1564
Project: 6373
Task: 637304
AD Number: AD0691471

The results of the developmental research leading to the design and fabrication of a short-time, electronic sensor to monitor the bacteriological quality of reprocessed water aboard spacecraft are reported. The basic sensing capability is furnished by a Coulter Counter that selectively detects and counts particles of bacterial size. Detection is accomplished by comparing the number of bacteria-size particles in the reprocessed water sample at some point in time with a particle count at some future point in time, i.e., following the establishment of conditions necessary to allow growth and multiplication of bacteria. A significant difference between the two counts strongly implies bacterial replication, and therefore the presence of viable organisms in the raw reprocessed water.

RAF Centre of Aviation Medicine
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