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GC bulk material or GC packing materials play a crucial role in gas chromatography, especially in packed columns. These materials often consist of diatomaceous earth coated with stationary phases and are used to facilitate the separation of components in a sample. The packed columns are made of either glass or stainless steel and contain the packing material that provides the analytical separation. At MZ-Analysentechnik you will find GC bulk media from GL Sciences, Welch, Restek, Merck and others.