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WeirdOOS
By JB43
Category: Weird. Viewed 2268 times. Created February 2014.     Disclaimer.    Privacy info.
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Was the OOS data calculated correctly?
YES
Is equipment adequately calibrated for sensitivity and accuracy?
YES
Are solutions and reagents prepared incorrectly, and/or degraded?
NO
Are personnel carrying out test method correctly?
YES
Perform full-blown OOS investigation.

NO


NO


YES


NO


Confirm analyst understands appropriate calculation methods
Calibrate equipment, and retest sample.
Discard problematic solutions/reagents. Prepare fresh solutions, and retest.
Retrain personnel for adequate method.