BS EN ISO 4259-2:2017+A1:2019
$167.15
Petroleum and related products. Precision of measurement methods and results – Interpretation and application of precision data in relation to methods of test
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 34 |
This document specifies the methodology for the application of precision estimates of a test method derived from ISO 4259‑1 . In particular, it defines the procedures for setting the property specification limits based upon test method precision where the property is determined using a specific test method, and in determining the specification conformance status when there are conflicting results between supplier and receiver. Other applications of this test method precision are briefly described in principle without the associated procedures.
The procedures in this document have been designed specifically for petroleum and petroleum-related products, which are normally homogeneous. However, the procedures described in this document can also be applied to other types of homogeneous products. Careful investigations are necessary before applying this document to products for which the assumption of homogeneity can be questioned.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 4 | European foreword |
| 6 | Foreword |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions |
| 8 | 4 Application and significance of repeatability, r , and reproducibility, R 4.1 General 4.2 Repeatability, r 4.2.1 General 4.2.2 Acceptability of results |
| 9 | 4.2.3 Confidence limits calculations using results collected under repeatability conditions 4.3 Reproducibility, R 4.3.1 Acceptability of results |
| 11 | 4.3.2 Confidence limits calculations using results collected under reproducibility conditions 4.4 Use of reproducibility to determine bias between two different test methods that purport to measure the same property 4.4.1 General |
| 12 | 4.4.2 Process 5 Specifications 5.1 Aim of specifications 5.2 Construction of specifications limits in relation to scope and precision of the specified test method |
| 14 | 6 Assessment of quality conformance to specification 6.1 General 6.2 Assessment of quality conformance by the supplier |
| 15 | 6.3 Assessment of quality conformance by the recipient 6.3.1 General 6.3.2 Single batch of product 6.3.3 Multiple batches of product |
| 16 | 6.3.4 Procedure for recipient to assess conformance for a single batch of product |
| 17 | 7 Dispute procedure 7.1 Resolve dispute by negotiation |
| 18 | 7.2 Use of the test method or procedure in case of dispute 7.3 Dispute resolution procedure |
| 19 | 7.4 Dispute unresolved |
| 20 | 7.5 Example of a dispute resolution |
| 22 | Annex A (informative) Explanation of formulae given in Clause 4 |
| 25 | Annex B (informative) Dispute resolution for specifications based on a specified degree of criticality |
| 28 | Annex C (informative) Statistical control in the execution of test methods by a laboratory |
| 30 | Annex D (informative) General approach to bias assessment using multiple materials |
| 31 | Annex E (informative) Glossary |
| 32 | Bibliography |
