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Columns types

Mechanical flotation machines are most commonly used in the mineral industiy, while pneumatic column-type units are gaining popularity in recent years. Surveys by Harris (1976), Young (1982), Bar-beiy (1982), and Mavros (1991) provide a detailed overview of the process-engineering aspec ts of mineral flotation devices in particular and systems in general. [Pg.1813]

Column type Dispersion coefficient, cmVs Reference... [Pg.1994]

Static system The batch-wise employment of ion-exchange resins, wherein (since ion exchange is an equilibrium reaction) a definite endpoint is reached in which a finite quantity of all the ions involved is present. Opposed to a dynamic, column-type operation. [Pg.439]

Column type Bed volume (ml) Column dimension (i.d. X L) (cm x cm) Column material" (tube/frit) Column fittings (inlet/outlet) Theoretical plates (N/m) Maximum operating pressure/flow rate (kPa)/(ml/min)... [Pg.53]

Four column systems are available from Amersham Pharmacia Biotech that can be used to pack SEC media for various applications at the laboratory scale. These include C, XK, SR, and HR column systems. All of the laboratory-scale columns are constructed with borosilicate glass tubes. Columns for larger scale process applications include INdEX, BPG, EineLINE, BPSS, and Stack columns. The larger scale columns are constructed to meet stringent validation requirements for the production of biopharmaceuticals. Each of the column types are described. [Pg.54]

Small peptides are among the most difficult compounds to analyze by aqueous SEC, although conditions for good separations have been developed for both TSK-GEL SW and TSK-GEL PW column types (15,16). Pigure 4.27 (page 124) compares the results of separating two mixtures of peptides on... [Pg.120]

Column type Column size (mm) Theoretical plate number Particle size (/im) Pore size (A) Maximum flow rate (ml/min) Maximum pressure (kgffcm ) Maximum temperature (°C) Exclusion limit ... [Pg.194]

Column type Usable pH range MeOH MeCN DMF... [Pg.196]

Column type Column size (mm) Theoretical plate number Range Flow rate (ml/min) Max Analytical column... [Pg.212]

Tables 11.1 through 11.4 give useful ranges for the various Styragel and Ultrahydrogel packings. It should be pointed out that Styragel packings with the designation E at the end of the name are mixed-bed columns with an extended range of the calibration curve. To view the full range of each calibration curve, go to the sections that discuss the individual column types. Tables 11.1 through 11.4 give useful ranges for the various Styragel and Ultrahydrogel packings. It should be pointed out that Styragel packings with the designation E at the end of the name are mixed-bed columns with an extended range of the calibration curve. To view the full range of each calibration curve, go to the sections that discuss the individual column types.
This section discusses in detail the column types that are available for the size exclusion chromatography of both polar and nonpolar analytes. It first discusses the various columns available for standard nonaqueous size exclusion chromatography. It then reviews the columns available for general size exclusion chromatography using aqueous mobile phases. Finally, it examines the columns designed for size exclusion chromatography of proteins and peptides. [Pg.335]

This chapter gives a summary of the size exclusion columns currently available from Waters Corporation. It includes a description of the principles used to select the column type as well as a discussion of the properties and use of different columns. A few application examples are included as well. This review is designed to give the user a good overview over the properties and capabilities provided by Styragel, Ultrahydrogel, and Protein-Pak columns. [Pg.347]

Column type Exclusion limit (polystyrene equivalent) Operating range (polystyrene equivalent)... [Pg.352]

Column type Guaranteed minimum efficiency (plates/meter)... [Pg.356]

Column type Peak variance (o) Calibration slope (D) Specific resolution (R,p)... [Pg.357]

The lifetime for GPC columns used under high temperatures is lower than at room temperature. If higher temperatures are necessary, the user should look for special offers of high temperature columns or check which temperature interval is permitted for the selected column type. For a maximum lifetime a few precautions are advantageous ... [Pg.430]

The contribution of the equipment between injection unit and detector cell should be negligable in relation to the column for a sufficient column characterization short connections with narrow capillaries and zero dead volume unions are the precondition for reliable plate numbers. Every end fitting of a column causes additional band broadening. In the past a column type was offered that could be directly combined without any capillary links unfortunately, it has disappeared from the market. [Pg.434]

This chapter describes the use of three commercially available SEC column types for the characterization of nonionic, anionic, and cationic, synthetic water-soluble polymers. These include TSK-PW, Synchropak, and CATSEC columns. Specific examples and experimental procedures are discussed for each type of column. Elowever, the major emphasis is on the use of TSK-PW columns due to their broad applicability for a variety of water-soluble polymers. [Pg.560]

In the case of photoinitiated polymerization, an oxygen-free aqueous solution of acrylamide with a concentration of about 50% mixed with a photosensibilizer and other required additives is passed through a column-type apparatus with exterior water-cooling. A thin layer of the solution is exposed to a mercury lamp, acquires the consistency of a plastic film, which then can be passed through a second exposure zone, and is crushed and dried. Acrylamide polymers produced by this method are easily soluble and have a low residual monomer content. [Pg.66]

These examples do not eover all possible variations of the solvents or column types described in the geochemical literature. The combinations of solvent separations, ion-exchange chromatography, and adsorption chromatography have also been proposed. [Pg.372]

The gas-liquid flow characteristics of stirred vessels depend both on the level of agitation and the rate of gas flow and can vary from the case of bubble column type operation to that of a full circulating tank, as shown in Fig. 5.123. The mixing characteristics and gas distribution obtained, obviously exert a considerable influence on the rate of mass transfer obtained (Harnby et al., 1985). [Pg.457]

GAS-LIQUID MIXING AND MASS TRANSFER IN BUBBLE COLUMN-TYPE MIXING TANK OPERATION EXAMPLE FOR OXYGEN CONSTANT VL1=300, VL2=100,VL3=600 L... [Pg.462]

Methods for DNA extraction Silica-membrane column-t)rpe kit Qiagen DNeasy Plant Mini kit Anion-exchange column-type kit Qiagen Genomic-tip kit CTAB method... [Pg.157]

Column Type Length m Internal Diameter mm Film Thickness /tm Phase Ratio Capacity Factor lU mm opi cm/s Column Plate Count Plates Per Meter... [Pg.26]

TYPICAL REDUCED PARAMETERS FOR DIFFERENT COLUMN TYPES... [Pg.44]

Column Type Minimum Reduced Plate Height Minimum Reduced Velocity flow Resistance Parameter Separation Impedance... [Pg.44]

See other pages where Columns types is mentioned: [Pg.280]    [Pg.472]    [Pg.39]    [Pg.42]    [Pg.121]    [Pg.128]    [Pg.129]    [Pg.328]    [Pg.340]    [Pg.561]    [Pg.220]    [Pg.277]    [Pg.23]    [Pg.77]    [Pg.159]    [Pg.156]    [Pg.1037]    [Pg.16]    [Pg.23]    [Pg.36]    [Pg.37]   
See also in sourсe #XX -- [ Pg.50 , Pg.51 ]



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