Standard Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance

Importancia y uso:

5.1 This practice may be used to continuously demonstrate the proficiency of analytical measurement systems that are used for establishing and ensuring the quality of petroleum and petroleum products.

5.2 Data accrued, using the techniques included in this practice, provide the ability to monitor analytical measurement system precision and bias.

5.3 These data are useful for updating test methods as well as for indicating areas of potential measurement system improvement.

5.4 Control chart statistics can be used to compute limits that the signed difference (Δ) between two single results for the same sample obtained under site precision conditions is expected to fall outside of about 5 % of the time, when each result is obtained using a different measurement system in the same laboratory executing the same test method, and both systems are in a state of statistical control.

Subcomité:

D02.94

Referida por:

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Volúmen:

05.02

Número ICS:

03.120.30 (Application of statistical methods)