Thermo Scientific Dionex AS-DV, Руководство оператора

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Dionex AS-DV Operator’s Manual
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Doc. 065259-05 10/12
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Liquid leak
1. Do not reuse caps or sample vials.
2. Inspect the lip and socket of each new cap for irregularities, nicks,
scratches, or other damage that might interfere with sealing as the cap is
pushed into the vial.
3. Make sure that the sampling tip is not damaged. Replace the tip if it is
scratched, damaged, plugged, or restricted in any way (see Section 5.3 ).
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Dissolved gas in samples
If the sample contains dissolved gas, it will produce peak area reductions. You
can observe bubbles in the sample line during injections.
1. Degas your sample with a vacuum filter or sonicate the samples.
2. Before sampling from the vial, perform a bleed to direct excess sample
and any air trapped in the vial to waste. For instructions, see
Section 3.8.2 . The bleed can be performed using either the injection valve
or an optional high-pressure valve.
3. If you are making multiple injections per vial, make them sequentially.
This allows the needle to remain in the vial between injections, thus
preventing air from entering the sample.
4.4 Unexpected or Extraneous Peaks Detected
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Sample contaminated
1. Never reuse sample vials and caps.
2. Always rinse new PolyVials and caps with deionized water before filling,
especially when doing trace-level analyses (see Section 3.1 ).
3. Run a rinse between samples, especially if samples are very different
from each other.
4.5 Sample Not Loaded
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TTL input not connected (if used)
During remote operation, make sure the TTL input cable is securely
connected (see
Appendix C ).