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    The ratio of deproteinization with MSpak GF-4A (a column for Column switching) and with a corresponding column of other company were compared. Since the ratio of deproteinazation is high, GF-2A can suppress the adsorption of protein to analytical columns or […]

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    GF-4A · High protein removal rate * GF-4A column removes proteins well but is not suitable for trapping hydrophilic substances. (Column for column switching method) Product code Product name Particle size (μm) Pore size (Å) Size(mm) I.D. x Length Shipping […]

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    Surfactants are often used to solubilize cell membrane and/or to prevent peptide/protein to be adsorbed on the container surface. However, the presence of surfactant may deteriorate LC column and LC/MS system, results in poor repeatability. By using MSpak GF-4A, surfactant […]

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    Surfactants are often used to solubilize cell membrane and/or to prevent peptide/protein to be adsorbed on the container surface. However, the presence of surfactant may deteriorate LC column and LC/MS system, resulting in poor repeatability. By using a column-switching sample […]

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    The figures below are system diagram on analysis of drugs in human serum using the column switching method. Deproteinization and concentration of the drugs are performed at the first step and the drugs are analyzed at the second step.