Accu-Chek Compact Plus Manuel De L'utilisateur page 32

If you insert a partly used test strip drum into the meter, the
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meter cannot calculate the use-by period for that drum.
Consequently, the next time you perform a test, the drum symbol
and flashing bottle symbol are displayed to highlight the fact (see
Chapter 2.3.1).
Use only Accu-Chek Compact test strip drums. Other test strips
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cannot be used to perform tests. If you insert a different test strip
drum, error message E22 is displayed (see Chapter 12.2).
Make sure that the drum compartment cover is tightly closed. If it
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is not properly closed, the meter will not turn on when you press
the Test button. All you see is the display check briefly.
You can dispose of used test strip drums with your regular
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household waste.
32
Initial steps before testing