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Evaluation of Microbial Capture Device in Microgravity (DTO 677)
Principal Investigator
Research Area:
Environmental monitoring
Species Studied
Scientific Name: Homo sapiens Species: Human

Currently, the NASA imposed water quality requirements provide maximum contaminant limits for physical parameters, inorganic compounds, organic compounds, and microbiological constituents. These requirements, most specifically the microbiological requirement of one colony-forming unit (CFU)/100 milliliters (ml), mandate that sources of contamination in potable water be minimized and controlled. Data collected during Shuttle, Apollo, and Skylab missions imply that a closed system could become significantly contaminated by both bacteria and fungi from long-term habitation.

Paramount to controlling the introduction of contaminants into the potable water system is the ability to accurately and consistently monitor the quality of spacecraft potable water. The collection and in-flight microbiological analysis of Shuttle potable water is necessary to evaluate the operation of hardware and the growth of microorganisms in a 0-g environment.

Flight evaluations of this hardware are required since there is no information concerning the complete integration of microbial potable water testing procedures in a 0-g environment. Although KC-135 testing has demonstrated the fluid transfer capabilities of the Microbial Capture Device (MCD), concern still exists over the ability of the bacteria to adhere to the MCD in 0-g.

The findings from this investigation will help determine and direct the need for redesign of water sampling hardware and microbial procedures for future routine application on long-duration missions.

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Data Information
Data Availability
Archive is complete. No data sets are available for this experiment. Please Contact LSDA if you know of available data for this investigation.

Mission/Study Information
Mission Launch/Start Date Landing/End Date Duration
STS-70 07/13/1995 07/22/1995 9 days
STS-94 07/01/1997 07/17/1997 16 days

Additional Information
Managing NASA Center
Johnson Space Center (JSC)
Responsible NASA Representative
Johnson Space Center LSDA Office
Project Manager: Pamela A. Bieri
Institutional Support
National Aeronautics and Space Administration (NASA)
Hardware Items