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Cleaning the meter
8.1 External parts
If the case of the meter or the display is dirty:
1 Wipe away any dirt using a cloth lightly mois-
tened with cold water or 70 % ethanol.
8.2 Test strip guide and measuring
window
You only need to clean the test strip guide and
measuring window
if you notice that the test strip guide or the meas-
uring window located beneath the cover are visibly
dirty,
if the error message
or is displayed.
A dirty measuring window may be the cause.