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What if the check sample doesn’t give correct results?
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Check that you have measured the sample from the right side, do not measure the sample from the
label/printed side
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Clean the measurement window
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Clean the check sample surface with isopropanol, dry the surface
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Ensure that the instrument nose is in direct contact with the sample
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Repeat the measurement.
If the problem persists, contact your local Oxford Instruments representative for further
instructions.