NASA NTRS · 19810000287
Vapor Detector
Abstract
Detector eliminates need for removing covers to take samples. Detector is canister consisting of screw-in base and clear plastic tube that contains two colors of silica gel. Monoethylhydrazine and nitrogen tetroxide vapors are visually monitored with canister containing color-changing gels.
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Waddell, H. M., Garrard, G. C., Houston, D. W.. 1982-12-01. Vapor Detector. https://ntrs.nasa.gov/citations/19810000287
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