NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Residual water bactericide monitor development programA silver-ion bactericidal monitor is considered for the Space Shuttle Potable Water System. Potentiometric measurement using an ion-selective electrode is concluded to be the most feasible of available techniques. Four commercially available electrodes and a specially designed, solid-state, silver-sulfide electrode were evaluated for their response characteristics and suitability for space use. The configuration of the solid-state electrode with its Nernstian response of 10 to 10,000 ppb silver shows promise for use in space. A pressurized double-junction reference electrode with a quartz-fiber junction and a replaceable bellows electrolyte reservoir was designed verification-tested, and paired with a solid-state silver-sulfide electrode in a test fixture.
Document ID
19730011765
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Date Acquired
September 2, 2013
Publication Date
March 23, 1973
Subject Category
Instrumentation And Photography
Report/Patent Number
FR-2639-102
NASA-CR-128884
Accession Number
73N20492
Funding Number(s)
CONTRACT_GRANT: NAS9-12733
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available