Bonded seal caps for autosampler

The perfect chromatography seal should be prefitted to the cap, safe for the autosampler needle, preserve the sample integrity over long time periods and need the minimum operator intervention - all requirements met by Chromacol's new wide neck screw caps with bonded seals.

The new caps have the silicone/PTFE seal bonded to the cap using a reagent-free process that gives no contamination of the seal. This bonding to the cap means that the seals are permanently fixed into the caps and cannot be displaced into the vial by the autosampler needle.

Solid and pre-cut seals are available to meet different autosampler requirements and in both cases the seals never require contact with the operator for re-insertion or fitting, eliminating another possible source of contamination.

Chromacol's 9-SC bonded caps are designed to fit the Chromacol range of 9mm wide neck vials and this includes standard 2ml vials, high recovery vials and the MICRO+ range.

All the bonded seals retain their PTFE barrier layer and even after repeated injections the inert characteristics and the contaminant-free bonding process ensure no contamination of the sample even when used with highly sensitive selective detectors and mass spectrometry.