Siemens Rapidlab 1200 Operator's Manual page 284

6-78
Message
Excessive
Bubbles in
CO-ox Sample
Insufficient
Sample
02087462 Rev. V
Rapidlab 1200 Operator's Guide: Troubleshooting
Probable Cause
The system detects bubbles in the
CO-ox sample chamber.
The system detects that not
enough sample volume exists to
complete routine analysis.
This is caused when you remove
the sample device from the
sample port before aspiration
completes or by low volume
samples.
Corrective Action
This occurs if the sample
contained bubbles, if air leaks are
present in the CO-ox sample
tubing, or if you inserted the
jagged end of capillary tubes into
the sample port.
CO-ox results are not reported.
Results for other enabled
parameters are reported.
1. Ensure that you use the
recommended storage,
handling, and mixing
techniques.
Refer to Collecting Samples‚
page 2-7. For QC samples,
use the storage and handling
techniques recommended by
the manufacturer.
2. Analyze the sample again,
ensuring that the sample has
no bubbles before
introducing it into the
sample port. Checking for
bubbles is especially
important for samples
introduced from capillary
tubes.
3. Check the CO-ox sample
tubing for cracks or leaks.
4. When analyzing a capillary
sample, ensure that you
introduce the smooth end of
the capillary tube into the
sample port.
For patient samples, the system
prompts you to analyze the
sample as a microsample. When
this happens, CO-ox results are
not reported and QC samples are
discarded and no results are
reported.