MERCK RQflex plus 10 Mode D'emploi page 10

Important
Interrupting the measurement procedure (menu guidance), to perform measure-
ments directly without the countdown function of the instrument.
When?
1. To repeat a measurement e. g. when the test strip / cell was inserted incorrectly
or too late.
2. For serial measurements.
How?
Once the first measurement has been completed, a further measurement can be
carried out simply by pressing the START button. In all these cases the instrument
makes the measurements immediately.
The result is displayed and stored automatically.
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Remarks regarding serial measurements
If you wish to measure e. g. several nitrate samples, it is advisable to follow the
procedure below. For repeat serial measurement the countdown function is not
available and an additional stopwatch is needed.
1. Run the standard measurement (procedure A) once.
2. Immerse separate test strips into your sample at 15-second intervals. Carefully
allow excess liquid to run off via the long edge of the strip onto an absorbent
paper towel and allow each strip to react outside the instrument .
3. After completion of the reaction time (60 sec) insert each strip into the instru-
ment. Press the START button to perform the measurement (i. e. a strip is inser-
ted and measured every 15 seconds).
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Attention
The reaction times of the tests must be monitored precisely. Differences from the
default value may cause (small) errors in the result due to changes in strip color
with time.
The instrument switches off after 2 minutes if no key is pressed within this time
period.
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