Automatic Liquid Sampler and Injector
Preparing sample vials
Released: March 2004 6850 Series II GC User Information page 219 of 256
Labeling sample vials
Vials are available with a write-on spot for easy marking. If you choose to make
and apply your own labels, Agilent Technologies recommends the positioning
and maximum label thickness shown in Figure 37.
Figure 37. Label specifications
Sample vial septa
There are two types of septa used with crimp caps and screw-on caps, each
with different resealing characteristics and different resistance to solvents.
One type is natural rubber formulation coated with Teflon on the sample side.
This septum is suitable for samples with a pH range of 4.0 to 7.5. It is less
resistant to solvents after puncture and is more easily cored than silicone
rubber. Coring may deposit septum pieces in the vial and affect your
chromatograms.
Another is high-quality, low-extractable silicone rubber septa, coated with
Teflon on one or both sides. This is more resistant to solvents after puncture
and to coring by the needle.
Refer to your Agilent catalog for consumables and supplies for more
information.
Figure 38 shows the diameter for vial cap apertures.
.2
.44
All measurements in millimeters
No label
No label
20.5 ± 1.0
5.6 ± 0.6
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