low bleeding gc columns

[jiangds06]

why some gc column are less bleeding than other columns? what chemistry are different?

[KM-USA]

When testing, don't some manufacturers just separate those out with exceptionally low bleed and call them MS phases? All manufacturers try to make columns with as low bleed as possible.

[James_Ball]

There is also cross-linking and cross-bonding of the phases which help make lower bleed in the columns. Each process is different on how they coat the phase on the column.