The terms High, Medium and Low are based on a relative flow when compared to Bare Fused Silica Capillaries. The Controlled Flow capillary always is slower than bare silica but the High Rate is the highest of the Controlled Flow capillaries. A set of conditions on a bare silica column that provides a migration time of 3.2 minutes for a neutral marker will provide a migration time of 4.3 minutes for High, 6.5 minutes for Medium and 8.2 minutes for Low when using Controlled Flow capillaries with that same marker.

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