![]() For additional information on packed columns, please review our FAQ’s and blog posts. This would most likely cause the bed to collapse. Never, ever cut (trim) a packed column like you would do with a capillary column.Some sort of flow meter is a necessity.Make sure you have the necessary fittings for installation.Most modern GC’s designed for use with capillary columns.Can be used with mass spectrometers because of narrower ID’s.Many more theoretical plates (separation power) than a packed column.Unique selectivity phases/packings available.Many unique selectivity phases/packings not available in capillary dimensions.Usually preferred when using a TCD as the detector. In other words, the particle is the support for the liquid phase. When coated, these particles are referred to as a solid support. When the particles are uncoated, they are usually referred to simply as the packing. Particles may be uncoated or coated (with a liquid phase). In many cases, does a better job at separating light gases than capillary columns. All packed columns contain particles, as mentioned earlier.Many older methods, which are still used today, were written using packed columns.So why would someone use a packed column instead of a capillary column? When coated, these particles are referred to as a “solid support”.When the particles are uncoated, they are usually referred to simply as the “packing”. All packed columns contain particles, as mentioned earlier. ![]() This is why they tend to be much shorter in length than a capillary column. Because they are packed, they have a much higher pressure drop across the column. Unlike GC capillary columns, which are referred to as WCOT (Wall Coated Open Tubular), or PLOT (Porous Layered Open Tubular), packed columns are what their name implies, they are packed full of fine particles and not “Open” (like a drinking straw). We seem to be getting more calls from first time users of packed columns, so I decided to write this post for these beginners to help them understand the terminology commonly used when describing these products. ASE Extraction System Parts Cross-Reference.Documentation Search (SDS, Certs, Data Packs).EZGC Method Translator & Flow Calculator.
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