Vial inserts allow the use of smaller sample volumes with standard autosampler vials. Inserts are generally chosen based on the inner diameter of the vial neck. Standard opening vials (4.6 mm ID) require a 5 mm OD insert.
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Journal of biomolecular techniques : JBT, 17(2), 131-137 (2006-06-03)
A semi-automated method for amino acid derivatization and analysis has been validated for use in analysis of protein biopharmaceuticals. The method includes protein hydrolysis, o-phthalaldehyde derivatization, and reversed-phase high-performance liquid chromatography analysis in a general-purpose UV-visible high-performance liquid chromatography system.
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