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    • 32. 发明申请
    • Air samplers
    • 空气取样器
    • US20040025963A1
    • 2004-02-12
    • US10381947
    • 2003-03-31
    • David James SquirrellWilliam Hunter SymondsHilary Anne BirdMartin John Berry
    • B65B003/26B65B001/30
    • G01N1/2273G01N1/2211G01N1/24G01N1/26G01N1/34G01N2001/2217G01N2001/2223G01N2001/4066
    • With reference to FIG. 1, and air sampler 1 for use in analysing biological or other analytes, comprises an airflow chamber 2 having an air inlet 3 and an air outlet 4. An extract from 5, draws ambient air in through the inlet 3, and then through the chamber 2, to discharge it back to atmosphere by way of an outlet 6. The airflow chamber 2 houses a cyclone air/liquid separator 7 through which the inflowing air is caused to pass. An injector 8 introduces liquid into air flowing through the air inlet 3. The cyclone separator 7 extracts this liquid and any entrained particles therein and discharges it from the airflow chamber 2, initially by way of a duct 9, where it is then conveyed to a collection vessel 12, by way of a three channel peristaltic pump 13, and a duct 14. The collection vessel 12 is housed within a Peltier-cooled holder 15 to maintain the contents of the vessel 12 within the 2null C.-8null C. range which is desirable for maintaining the integrity of biological analytes such as bacteria or proteins. Analyses such as PCR, culture on agar plates or immunoassays may be performed on the collected samples. The holder 15 also houses sample bottles 16, 17, 18 and 19.
    • 参考图1。 1和用于分析生物或其它分析物的空气取样器1包括具有空气入口3和空气出口4的气流室2.来自5的提取物通过入口3吸入环境空气,然后通过室 2,通过出口6将其排放回大气。气流室2容纳旋风分离器空气/液体分离器7,通过该旋风分离器空气/液体分离器7使流入的空气通过。 喷射器8将液体引入流过空气入口3的空气中。旋风分离器7将该液体和任何夹带的颗粒提取出来,并将其从气流室2排出,最初通过管道9,然后将其输送到 收集容器12,通过三通道蠕动泵13和管道14.收集容器12容纳在珀尔帖冷却的保持器15内,以将容器12的内容物保持在2℃-8℃ 对于保持生物分析物如细菌或蛋白质的完整性是期望的。 可以在收集的样品上进行PCR,琼脂平板培养或免疫测定等分析。 保持器15还容纳样品瓶16,17,18和19。
    • 34. 发明申请
    • Vacuum air component sampler
    • 真空空气成分取样器
    • US20020062702A1
    • 2002-05-30
    • US09728790
    • 2000-11-30
    • Bruce J. Bradley
    • G01N001/14G01N001/00
    • G01N1/2214G01N1/2208G01N2001/2217G01N2001/2223G01N2001/248
    • The invention is an air sampler which utilizes a hydrophobic filter and an entrapment fluid contained within a sampler body. Air to be sampled is bubbled through the entrapment fluid, which traps and retains a selected air component for later testing. Air which is thus bubbled through the entrapment fluid passes through a hydrophobic filter before leaving the sampler body. A hydrophobic filter prevents aqueous liquids from exiting the sampler body. This allows a higher rate of air flow, because the sampling fluid does not diminish as quickly due to suspended droplets exiting the sampler body. The sampler body may also be inverted to rinse down the walls of the sampler body without losing any liquid, due to the presence of the hydrophobic filter. The entrapment fluid can be poured or drained out of the sampler body.
    • 本发明是采用疏水过滤器和包含在采样器体内的捕集液的空气取样器。 待采样的空气通过捕集流体鼓泡,捕集并保留选定的空气组分供以后测试。 在离开采样器主体之前,通过吸引流体鼓泡的空气通过疏水过滤器。 疏水过滤器防止含水液体离开采样器主体。 这允许更高的空气流速,因为采样流体不会由于离开采样器主体的悬浮液体而快速减少。 由于疏水性过滤器的存在,采样器主体也可以倒置以冲洗采样器主体的壁而不会损失任何液体。 捕集液可以从采样器体中倒出或排出。
    • 36. 发明授权
    • Microbial sampler and concentrator
    • 微生物取样器和浓缩器
    • US5868928A
    • 1999-02-09
    • US872268
    • 1997-06-10
    • Bruce J. Bradley
    • Bruce J. Bradley
    • B01D21/26C12M1/26B01D63/00
    • C12M33/04B01D21/262B01D2221/06B01D2221/08G01N2001/028G01N2001/2217
    • A microbial sampling, filtration, and recovery device which utilizes a wash solution on meat carcasses and a vacuum source to vacuum the wash solution and suspended microbes into a collection device. The collection device includes pre-filters for removing debris, and a microbial filter. The filter is small enough to filter out bacteria, and since this size of filter seriously reduces air flow, an alternate route for air is provided through a hydrophobic filter. Bacteria captured on the filter is back-flushed into a collection vessel where it is concentrated in a subsequent centrifuge step. The concentrated microbial sample is available for use in rapid detection methods.
    • 微生物采样,过滤和回收装置,其利用肉体上的洗涤溶液和真空源将洗涤溶液和悬浮微生物真空吸收到收集装置中。 收集装置包括用于去除碎屑的预过滤器和微生物过滤器。 过滤器足够小以过滤掉细菌,并且由于这种过滤器的尺寸严重降低了空气流量,所以通过疏水过滤器提供了空气的替代途径。 将在过滤器上捕获的细菌回冲入收集容器中,在收集容器中将其浓缩在随后的离心机步骤中。 浓缩的微生物样品可用于快速检测方法。
    • 40. 发明授权
    • Device and method for the continuous measurement of the ammonia
concentration in gases in the ppm range
    • 在PPM范围内连续测量气体浓度的装置和方法
    • US5131260A
    • 1992-07-21
    • US676707
    • 1991-03-29
    • Reinhold BrandBernd EnglerWolfgang HonenEdgar Koberstein
    • Reinhold BrandBernd EnglerWolfgang HonenEdgar Koberstein
    • G01N31/00G01N1/22G01N1/34G01N1/40G01N33/00
    • G01N1/405G01N1/2258G01N33/0054G01N2001/2217G01N2001/2282G01N2001/4033
    • A device for the continuous measurement of the ammonia concentration in gases in the ppm range includes a columnar absorption vessel (1) with a hemispherical bottom (4). The bottom of the column includes an overflow (3) and an outlet (5). The gas introduction pipe (7,8) empties above the bottom (4) and below a sieve bottom (6) arranged in the column (1). A packing material (10) rests on the sieve bottom (6), which packing (10) essentially fills the absorption column (1). A cooling part (11) extends from the absorption column (1). The cooling part (11) includes a cooling zone (15) and a gas collection space (16) above it with a closable connection piece (13). A pipe (14), which may include a serrated crown on each end, runs from the gas collecting space (16) downward in a cooled manner to the packing 10. The liquid absorption agent is introduced through a lateral connection piece (18) into the gas collection space (16). For the measurement of ammonia concentration, a certain volume flow of the gas to be measured is washed in a countercurrent flow with the absorption agent, and the NH.sub.3 content is determined in a part of the ammonia containing absorption agent. The volume flow rate of the absorption agent and of the gas from which NH.sub.3 has been removed is measured (the latter being dried), and the ammonia concentration is thereby calculated.
    • 在ppm范围内连续测量气体中的氨浓度的装置包括具有半球形底部(4)的柱状吸收容器(1)。 塔的底部包括溢流(3)和出口(5)。 气体导入管(7,8)在布置在塔(1)中的底部(4)和下方的筛底(6)之上排空。 包装材料(10)搁置在筛底(6)上,该填料(10)基本上填充吸收塔(1)。 冷却部件(11)从吸收塔(1)延伸。 冷却部件(11)在其上方包括一个冷却区(15)和一个气体收集空间(16),并具有可关闭的连接件(13)。 可以在每个端部包括锯齿状冠的管道(14)从气体收集空间(16)以冷却的方式向下延伸到填料10.液体吸收剂通过横向连接件(18)引入 气体收集空间(16)。 为了测量氨浓度,将要测量的气体的一定体积流量与吸收剂以逆流流动洗涤,并且在含氨吸收剂的一部分中测定NH 3含量。 测量吸收剂和从其中除去NH 3的气体的体积流量(后者被干燥),由此计算氨浓度。