Filter for gas analysis
AssigneePall Corporation
InventorJoseph G. Adiletta
Life of this patent
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Abstract
A filter (20) suitable for gas analysis, especially non-gravimetric gas analysis, by collecting particulate matter thereon, with a filter material comprising a polycarbonate membrane having a maximum pore size of 2 micrometers or less that is secured by a support (5) formed of a polyolefin or polymethylpentene material. For additional embodiments, the particular manner of support mounting to the membrane may include thermal-bonding techniques, and the particular method of analysis may include X-Ray luminescence.
Claims23
A filter for analyzing gas by collecting particulate matter onto the filter in a non-gravimetric type analysis comprising:
- a polycarbonate membrane having a pore size of about 1 micrometers or less, and a support comprising a polyolefin, the membrane being secured to the support.
A filter for analyzing gas by collecting particulate matter onto the filter in a non-gravimetric type analysis comprising:
- a polycarbonate membrane supported by an integral support, wherein the membrane has a pore size of about 2 micrometers or less.
A method for analyzing gas comprising:
- passing gas including particulate matter through a filter comprising a supported polycarbonate membrane having a pore size of about 2 micrometers or less, wherein the membrane is supported by a polyolefin support;
- and
- determining the particulate matter collected by the filter.
A non-gravimetric method for analyzing gas comprising:
- passing gas including particulate matter through a filter comprising an integrally supported polycarbonate membrane having a pore size of about 1 micrometers or less;
- and
- determining the particulate matter collected by the filter.
Dependencies are inferred from the claim text.