Vent filter with direct sample capability
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United States of America Patent
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May 28, 2002
Grant Date -
N/A
app pub date -
Oct 5, 2000
filing date -
Oct 5, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
Vent filters for containers such as barrels which contain hazardous waste, such as transuranic (nuclear) waste, include a bore therethrough which does not intersect the material of carbon-to-carbon filter media inserts disposed within the vent filter. Each of the bores has a stainless steel tube disposed therein wherein the stainless steel tube has at an interior end a septa-type seal and at an outer end an impenetrable plug. In order to sample head gases, a syringe is used with a needle that penetrates the septa-type seal. After the needle is withdrawn, the septa-type seal closes and the impenetrable plug is replaced.
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