Roche Diagnostics
Instructions for Use · Version 10.0 123
9180 Electrolyte Analyzer 8 Quality control
Performing a QC measurement
Performing a QC measurement
WARNING
Required QC measurements
r In order to ensure the quality of the measurement results, complete a quality control
test on 3 levels (1=low, 2=normal, 3=high) after each electrode exchange, after each
replacement of the SnapPak, after startup of the instrument as well as after monthly,
semi-annual and annual maintenance steps.
r Additionally, at least one daily QC measurement has to be performed in alternating
levels (1=low, 2=normal, 3=high) (e.g., day 1 - level 1, day 2 - level 2, day 3 - level 3,
day 4 - level 1, etc.). When required by local regulations, QC measurements have to be
performed more often.
q
The last 35 QC measurements can be stored per level. The values can be stored and the
statistics be printed at any time.
q
ISETROL should be stored at 15-30 °C.
o Starting from the READY screen, press NO until
QC/STD/DIALYSATE/URINE SAMPLE? appears.
o Press YES, QC Level 1 Sample? will be displayed. Press YES.
The prompt Open Sample Door Introduce Sample will be displayed.
o Take a Level 1 ampoule from the ISETROL box and mix it carefully. Do not shake
the ampoule.
o Gently tap the head of the ampoule with your fingernail to remove any liquid.
o Carefully open the ampoule by breaking off the top.
CAUTION
Personal injury due to contact with glass splinters from broken QC ampoules
Glass splinters created when breaking QC ampoules may result in personal injury.
r When you break QC ampoules, wear protective gloves and use several layers of
gauze.
o Open the sample door: The prompt Introduce Sample appears.
q
Introduce the QC material directly from the ampoule! Use each ampoule only once.
o Aspirate the liquid from the ampoule within one minute after opening.
o Hold the ampoule under the probe until Wipe Probe/Close Sample Door is
displayed.
o Use a lint-free tissue to clean the probe, then close the sample door.
o The instrument will display QC Level 1 in progress and a countdown will begin,
during which the QC will be analyzed. Upon completion, the results will be briefly
displayed, such as:
q
The 9180 Electrolyte Analyzer "flags" values that are above or below the programmed
target ranges by using an "up" or "down" arrow.
Na K
Cl
125.1 3.05 77.8
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