Preparing a Sample
Sample Preparation
57
6. With slow and steady pressure, squeeze the crimper handles to seal the
vial.
7. Remove the crimper.
8. Check that the seal is adequate by trying to twist the cap on the vial. It
should be difficult or impossible to turn the cap. If you can easily turn the
cap on the vial, re-crimp the cap. You may need to adjust the crimping tool.
9. To decap vials, use a decapper for vials with 20 mm caps (part no.
5181–1214).
Note Vials will contain laboratory air, which may be contaminated with things such
as solvents or Freon leaking from air conditioners. If contaminants will
adversely affect your results, use argon to purge the vials just before capping
and sealing.
Figure 9. Position of crimper and vials for proper capping
Handle
Adjusting screw
Jaws
Sample vial
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