Design and Performance of an Integrated Analytical Swatch Testing System |
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| Authors: | Sherry O. Farwell Adrian Verwolf Zhongtao Cai Pauline Smith Walter Roy |
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| Affiliation: | 1. Evergreen Measurement and Certification Center , Rapid City, South Dakota, USA sfarwell@emcclab.com;3. South Dakota School of Mines and Technology , Rapid City, South Dakota, USA;4. Evergreen Measurement and Certification Center , Rapid City, South Dakota, USA;5. U. S. Army Research Laboratory, Materials Application Branch, Aberdeen Proving Ground , Maryland, USA;6. Strategic Mantech Inc. , Aberdeen, Maryland, USA |
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| Abstract: | Abstract An integrated swatch testing system for precisely quantifying the resistance of chemical protective materials to permeation and penetration by a chemical weapons agent (CWA) simulant is described. The analytical variability of methodologies currently used by Department of Defense testing laboratories was dramatically reduced by modifying the test cell and experimental procedures while maintaining compatibility with military testing specifications. Utilizing an on-line calibration system, cryogen-free preconcentrator, and flame ionization detector, the integrated system has demonstrated excellent repeatability, reproducibility, and high sampling frequency for a variety of non-porous and air-penetrable swatch samples challenged with methyl salicylate. |
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| Keywords: | Instrument design Material characterization Permeation testing |
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