Low column bleed is an industrial trend to push applications to new limits, such as temperature limit, and detection limit. Low column bleed also implies long life time of column. Low column bleed means crosslinked and bonded stationary phases.
All stationary phases of AB GC columns are carefully made in-house to ensure controllable column selectivity and low column bleed. Most stationary phases are crosslinked and bonded after column preparations. Without any compromise, most AB GC columns are tested for column bleed.
Table III shows the specs of AB-5MS.