News — polyimide resin

Repairing a Column with a Press2Fit™ Union

angled union column repair column repair union fixing a broken column polyimide resin

  Purpose: Provide step-by-step instructions for best practices in capillary column repair Theory:         GC capillary columns sometimes break on the column cage. While most of the causes of such    failures are relatively benign, some may portent coming disaster (see #6 in “How to Properly Cut Capillary Columns”) and improper repair of a capillary column break can convert a benign failure into a catastrophic failure.             Benign sources of failure are inadvertent, local damage in handling, polyimide erosion or abrasion due to contact with the wire cage and the occasional, random flaw manifesting itself. Such breaks are, by definition, “improper column...

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