✦ LIBER ✦

A new technique for stripping of polyimide coating from fused-silica capillaries

✍ Scribed by Peter Lindberg; Prof. Johan Roeraade

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 213 KB
Volume: 19
Category: Article
ISSN: 0173-0835
DOI: 10.1002/elps.1150191415

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✦ Synopsis

Abstract

A novel method for the manufacture of detection windows in polyimide‐coated fused‐silica capillary columns is described. Concentrated fuming nitric acid at room temperature is utilized for stripping of the coating from a defined section of the capillary. The technique is particularly suitable for columns that have a heat sensitive coating on the inner wall or for columns that contain an immobilized hydrogel sieving‐matrix. A column holder for the simultaneous preparation of detection windows in an array of more than 100 capillaries is also reported.

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