X1.1 Confirm the performance of the instrument or the test
procedure by analyzing a QC sample.
X1.2 Prior to monitoring the measurement process, the user
of the test method needs to determine the average value and
control limits of the QC sample (see Practice D6299 and MNL
7).9
X1.3 Record the QC results and analyze by control charts or
other statistically equivalent techniques to ascertain the statistical control status of the total testing process (see Practice
D6299 and MNL 7). Any out-of-control data should trigger
investigation for root cause(s).
X1.4 In the absence of explicit requirements given in the
test method, the frequency of QC testing is dependent on the
criticality of the quality being measured, the demonstrated
stability of the testing process, and customer requirements.
Generally, a QC sample is analyzed each testing day with
routine samples. The QC frequency should be increased if a
large number of samples are routinely analyzed. However,
when it is demonstrated that the testing is under statistical
control, the QC testing frequency may be reduced. The QC
sample precision should be checked against the ASTM test
method precision to ensure data quality.
X1.1 Confirm the performance of the instrument or the testprocedure by analyzing a QC sample.X1.2 Prior to monitoring the measurement process, the userof the test method needs to determine the average value andcontrol limits of the QC sample (see Practice D6299 and MNL7).9X1.3 Record the QC results and analyze by control charts orother statistically equivalent techniques to ascertain the statistical control status of the total testing process (see PracticeD6299 and MNL 7). Any out-of-control data should triggerinvestigation for root cause(s).X1.4 In the absence of explicit requirements given in thetest method, the frequency of QC testing is dependent on thecriticality of the quality being measured, the demonstratedstability of the testing process, and customer requirements.Generally, a QC sample is analyzed each testing day withroutine samples. The QC frequency should be increased if alarge number of samples are routinely analyzed. However,when it is demonstrated that the testing is under statisticalcontrol, the QC testing frequency may be reduced. The QCsample precision should be checked against the ASTM testmethod precision to ensure data quality.
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