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Polyvinyl Alcohol (PVA) Coated Capillaries

Polyvinyl Alcohol (PVA) Coated Capillaries

Agilent provides a broad range of stable polyvinyl alcohol (PVA)-coated capillaries over a wide pH range, from pH 2.5 to 9.5, allowing the use of a wide range of common CE buffers.

PVA-coated capillaries contain a permanently adsorbed layer of polyvinyl alcohol. This coating minimizes hydrophobic and electrostatic solute/wall interactions and eliminates electroosmotic flow (EOF). Many proteins and amines can be analyzed without the peak tailing found with uncoated capillaries. In addition, since EOF is eliminated, cumbersome washing procedures are unnecessary and migration time reproducibility can be improved.

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