Lovibond TB 350 Mode D'emploi page 37

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  • FRANÇAIS, page 128
Symptom
Calibration Error
Calibration Error
Calibration Error
Verification Error
EN   TB 350
Possible Cause
Calibration standards were
ran in the wrong order
Calibration standards were
not adequately mixed.
Calibration Standards
prepared to wrong turbidity
values
Verification falls outside the
Error boundaries
6 Troubleshooting
Solution
Repeat calibration with
standards run from lowest to
highest value.
Mix standards as instructed
immediately prior to
performing the calibration.
Repeat preparation of
calibration standards, making
sure dilutions are correct.
• Mix the verification standard
prior to verification.  
• Check pass/fail criteria to
ensure the criteria is not
tighter than the accuracy
of the standard and adjust
these criteria accordingly.
• Check expiration date of
standard
EN
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