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    BGI Collison氣溶膠發生器原版使用手冊

    下載次數:339 瀏覽次數:667發布時間:2017-04-26 20:01
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    文檔詳情

    The Collison Nebulizer was first described in the scientific literature by Collison in 1935, according to May(1).

    Over the intervening years, it has become the recognized technique for atomizing liquids and suspensions.

    The original version had 3 jets and BGI is responsible for the standardization and publication of the 6 jet

    version(2).

    Nebulization is taken to mean a refinement of two fluid atomization. In an atomizer, a gas is used to aspirate

    the liquid into a (usually) sonic velocity gas jet, wherein it is sheared into droplets. In a Nebulizer, this

    liquid/gas jet is impacted against a barrier (the inside of the jar) to remove the larger fraction of the droplets.

    There is one basic type of Collison Nebulizer, known as the modified MRE, which is manufactured by BGI.

    MRE stands for Microbiological Research Establishment, located in Porton, England.

    All Collison Nebulizers of current BGI manufacture, have all the metal components fabricated from 316

    stainless steel. All “O” rings are buna N or silicone rubber. No flat gaskets are currently utilized. Glass jars

    are either Crown Glass (standard) or Pyrex (precious fluids jar only). The 24 jet Collison jar is coated with

    clear PVC.

    2. Safety Precautions

    While the recommended pressure to be applied to the nebulizer may vary from 20 to 100 psig., it must be

    clearly understood that this pressure is expanded to just above atmospheric, inside the jar. The glass jar is

    not to be subjected to pressures above 1 psig under any circumstances! Great care must be exercised

    at all times when connecting the nebulizer’s output to other apparatus, to ensure that the flow of gas out of the

    nebulizer is not restricted in any manner that will cause significant back pressure.

    The Collison Nebulizer is intended to be utilized by trained scientific professionals. BGI will bear no

    responsibility for misuse.

    3.0 Set up

    3.1 Air. It is the responsibility of the investigator to supply a source of clean, compressed air. The

    volumetric requirements as follows:

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