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Get PriceAug 21, 2014If you pump the vacuum furnace down to 1 micron, shut it off and come back in an hour to find it has gone up to 8 microns then the leak rate is 7 microns/hr. If you look at just this sample, you would fail your mandated leak rate. Looking at the same situation again, let us say you come back in one hour to find the leak rate is 7 microns/hr.GE Washer Reviews | BEST and WORST Ratings
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