SEMI F35 : 2004
Current
The latest, up-to-date edition.
TEST METHOD FOR ULTRA-HIGH PURITY GAS DISTRIBUTION SYSTEM INTEGRATION VERIFICATION USING NON-INVASIVE OXYGEN MEASUREMENT
12-01-2013
Gives a guide for monitoring the integrity of UHP (ultra-high purity) gas distribution systems by finding the ingress of atmospheric oxygen. It is used for protecting semiconductor fabrication processes using the UHP gases, which are liable to contamination by common atmospheric impurities before product yield problems develop. The method differs form SEMI F1 which is an invasive technique for identifying leak sources using a mass spectrometer and helium tracer gas.
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