SYMPOSIA PAPER Published: 01 January 1993
STP15950S

Evaluation of the Differences in Performing Particle Analysis with Water Instead of CFC Fluids

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Most aerospace cleaning specifications require particulate analysis as part of the cleanliness verification process. Trichlorotrifluoroethane, CFC-113, is presently the test solvent of choice for cleanliness verification.

It has been proposed to use water to replace CFC-113 as the test solvent for cleanliness verification; however it has been speculated that the differences in the physical properties between the two fluids will result in significantly different results in the particle analysis.

A comparison of deionized water versus CFC-113 has been conducted for several types of sampling of components. This paper presents a description of the tests, the test results, observations, and conclusions regarding the subject.

Author Information

Welch, PJ
Materials Science Laboratory, National Aeronautics and Space Administration, Kennedy Space Center, FL
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Details
Developed by Committee: G04
Pages: 27–36
DOI: 10.1520/STP15950S
ISBN-EB: 978-0-8031-5236-6
ISBN-13: 978-0-8031-1496-8