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Repairing a Column with a Press2Fit™ Union
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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...
What is SilcoNert® 2000 Deactivation?
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SilcoNert 2000 is precisely the same inert coating as Siltek®, by Restek. The company that does the deactivation for us is SilcoTek®, a spin-off of Restek, and run by Restek’s long time “head coach”, Paul Silvis. SilcoNert 2000 is the most popular deactivation coating in analytical chemistry, and for good reason. SilcoNert 2000 deactivation works with acidic and basic compounds, chlorinated and organo-phorphorous pesticides, ammonia and nitrogen oxide compounds, organo-sulfur compounds, even mercury, so there is no need to swap out liners for compatibility with differential sample chemistry. SilcoNert 2000 deactivation is more effective than other deactivation chemistries,...
Why do GC Capillary Connections Leak?
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The 3 Leading Causes of Column Leaks Among some chromatographers, capillary connections using press fit connectors have a reputation for leaking. Where there was a time when this was true, that time has past. InnovaQuartz collected and studied leaks from the field for a period of three years; 28 of the leaks were in our own products (of over 1,000,000 sold in that same period) and most of those were Y-splitters. We found that 98+% of leaks in press fit connections arise from three classes of problems, all of which may be addressed by a correctly designed connector: 1) Less...
Bare Glass versus Deactivation
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Why Choose Quartz for GC Liners?
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