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Liquid gel chromatography(LGC) is an established laboratory technique for the differential fractionation and separation of molecules. The underlying premise for simple LGC is that molecules elute from a gel bed in order of decreasing molecular weight. Generally, gel particles fill a chromatography column to form a bed. When the molecules to be partitioned, such as cells or proteins are introduced and driven through the bed by supplemental eluent, the molecules separate on the basis of molecular weight.  2, fiche 1, Anglais, - liquid%2Dgel%20chromatography

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Cromatografía de líquidos en la que la fase estacionaria es un gel.  1, fiche 1, Espagnol, - cromatograf%C3%ADa%20l%C3%ADquido%2Dgel

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A device for the extremely sensitive measurement of the refractive index of liquids; used as a detector in liquid chromatography.  2, fiche 3, Anglais, - differential%20refractometer

Record number: 3, Textual support number: 1 CONT

The most universal continuous detector for liquid chromatography is the differential refractometer. This detector is universal only to the extent that one can select an eluent the refractive index of which differs from that of the solutes. Pure eluent flows through one cell of the detector while column effluent flows through the other cell. When a solute with a refractive index different from that of the solvent enters the detector, an imbalance occurs, which is transmitted to the recorder. The differential refractometers are relatively insensitive to trace and minor components, and detector stability is greatly affected by small temperature and flow fluctuations, thus requiring very good flow and temperature controls.  3, fiche 3, Anglais, - differential%20refractometer

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Le réfractomètre différentiel mesure en continu la différence d'indice de réfraction entre la phase mobile et l'effluent de la colonne chromatographique. La limite de détection dépend à la fois de la nature du soluté et de celle de la phase éluante.  2, fiche 3, Français, - r%C3%A9fractom%C3%A8tre%20diff%C3%A9rentiel

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In ion exchange chromatography, the differential attraction of various ions for ionic exchange resin is used to separate out ions in solution. As these ions elute from the column their concentration is measured by conductimetric techniques.  1, fiche 4, Anglais, - conductimetric%20technique

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