Title:
SAMPLING TUBE AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JP3844269
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent a measurement from being disturbed due to a contamination in a sampling tube by a method wherein a gas-permeable plug is made of an inert material and a non-inert material does not exist inside the sampling tube.
SOLUTION: A sampling tube 1 is composed of a glass tube 2 having two closed ends 3, and an adsorbent 4 is filled into the pipe 2 over a part of its whole length. The adsorbent 4 is restrained between two gas-permeable plugs 5. The plugs 5 are made of a completely inert material, and a non-inert material such as, e.g. a glass wool plug does not exist inside the sampling tube 1. For example, every plug 5 is made of a metal so as to be constituted as a sieve. A suitable metal which can manufacture every plug 5 is, e.g. platina, gold, silber, copper or stainelss steel, or an alloy whose insert characteristic is equal to that of the metal. Every plug 5 is constituted as a lid which is provided with a gas-permeable edge 5a and with a cylindrical face 5b which is extended perpendicularly to it.
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| JPS54114290 | GAS ANALYTICAL APPARATUS |
Inventors:
Van der Mars, Marinus France
Application Number:
JP21238697A
Publication Date:
November 08, 2006
Filing Date:
July 03, 1997
Export Citation:
Assignee:
Esgate The Explorer B. Fau.
International Classes:
G01N1/00; G01N1/22; B01D53/02; B01D53/04; B01J20/02; B01J20/28; (IPC1-7): G01N1/00; B01D53/02; B01D53/04; B01J20/02; B01J20/28
Domestic Patent References:
| JP2052235A | ||||
| JP57038928A |
Attorney, Agent or Firm:
Kenjiro Take
Koji Shichijo
Koji Shichijo