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    • 2. 发明公开
    • COMPOSITE COLUMN FOR USE IN HIGH PRESSURE LIQUID CHROMATOGRAPHY
    • 用于高压液相色谱的复合柱
    • EP3258260A1
    • 2017-12-20
    • EP17176505.0
    • 2017-06-16
    • LAKE REGION MANUFACTURING, INC.
    • BROADLEY, Mark W.ECKERT, John K.
    • G01N30/60B01D15/22
    • B01D15/22B01D15/10B21C1/16B21C1/24F16L9/14G01N30/32G01N30/60G01N30/6026G01N30/6052G01N30/6073G01N30/6095
    • A multi-walled tube (100) comprising an inner tube (112), an intermediate tube (114) and an outer tube (116) that is useful as an analytical column in which chemical mixtures can be separated into their individual components is described. In order to be acceptable as an analytical column, the inner surface (112A) of the multi-walled tube must support effective separation, but not react chemically with or contaminate the solvent or the analyte (sample to be separated). Grade 316 stainless steel is typically preferred for this purpose. Moreover, the inner diameter (ID) surface of the multi-walled column is preferably very smooth (less than 10 micro inch Ra) with no interruptions in the surface such as scratches, pits, or asperities. However, since the column is designed to be attached to chromatographic equipment using standard size connection features, the size of standard fittings define the outer diameter (OD) of the column.
    • 描述了包括内管(112),中间管(114)和外管(116)的多壁管(100),其可用作分析柱,其中化学混合物可被分离成其各个组分。 为了可以用作分析柱,多壁管的内表面(112A)必须支持有效的分离,但不能与溶剂或分析物(待分离的样品)化学反应或污染。 通常优选316级不锈钢用于此目的。 此外,多壁柱的内径(ID)表面优选非常平滑(小于10微英寸Ra),而不会在表面中断,例如划痕,凹坑或凹凸不平。 但是,由于色谱柱设计为使用标准尺寸的连接功能连接到色谱设备,因此标准配件的尺寸确定了色谱柱的外径(OD)。