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  • 產品詳情
    • 產品名稱:Multi-stage liquid impinger多級液體撞擊器

    • 產品型號:
    • 產品廠商:英國BURKARD
    • 產品文檔:
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    簡單介紹:
    Multi-stage liquid impinger多級液體撞擊器
    詳情介紹:

    Multi-stage liquid impinger多級液體撞擊器

    Product Description

    Since 1966 bacteriologists have come to respect the May impingers for the separation of particles according to their deposition sites in the respiratory system. The fractions are collected gently into liquid where clumps separate into viable units. There is little danger of sample overload and sub-samples permit the use of a variety of culture methods.

    The original designs involved complex glass blowing, were difficult to clean and to reproduce accurately. The 20 l/min size is designed to produce particle fractions (> 10 μm, 10-4 μm, < 4 μm) that are closest to those likely to be agreed as international standards.

    The Burkard version closely follows May’s intermediate (20 l/min) size, accurately produced in anodised aluminium alloy (or stainless steel). Airtightness is ensured by vertical compression, releasing this allows the sampler to be dismantled for removal of the catch, and for cleaning. It can then be fitted and re-assembled before heat sterilisation and operation. The flow is controlled by a critical orifice built into the third stage. To ensure this accurate flow the vacuum pump must be capable of maintaining a pressure difference of at least 180 mm (7inches) of mercury. A ‘stagnation-point shield’ is provided to improve aspiration efficiency in moving air. To maintain the designed depth of collection fluid in the machined chambers it is recommended that 6 ml be added to each stage. (Not 4 ml as originally described).

    Additional information

    Overall height

    145 mm

    Overall length

    115 mm

    Overall width

    100 mm

    Nett weight

    670 g

    Vacuum hose

    6 mm bore


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