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ASTM D 7235 : 2021 : REV A

Current
Current

The latest, up-to-date edition.

Standard Guide for Establishing a Linear Correlation Relationship Between Analyzer and Primary Test Method Results Using Relevant ASTM Standard Practices
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

21-12-2021

1.1This guide covers a general methodology to develop and assess the linear relationship between results produced by a total analyzer system versus the results produced by the corresponding primary test method (PTM) that the analyzer system is intended to emulate, using the principles and approaches outlined in relevant ASTM standard practices and guides.

1.2This guide describes how the statistical methodology of Practice D6708 can be employed to assess agreement between the PTM and analyzer results, and, if necessary, develop linear correlation to further improve the agreement over the complete operating range of the analyzer. For instances where there is insufficient variation in property level to apply the Practice D6708 multi-level methodology, users are referred to Practice D3764 to perform a level specific bias evaluation. The correlation relationship information obtained in the application of this guide is applicable only to the material type and property range of the materials representative of those used to perform the assessment. Users are cautioned against extrapolation of the relationship beyond the material type and property range being studied.

1.3This guide applies if the process stream analyzer system and the primary test method are based on the same measurement principle(s), or, if the process stream analyzer system uses a direct and well-understood measurement principle that is similar to the measurement principle of the primary test method. If the process stream analyzer system uses a different measurement technology from the primary test method, provided that the calibration protocol for the direct output of the analyzer does not require use of the PTM, this practice also applies.

1.4This guide does not apply if the process stream analyzer system utilizes an indirect or mathematically modeled measurement principle such as chemometric or multivariate analysis techniques where results from PTM are required for the chemometric or multivariate model development. Users should refer to Practices D8321 and D6122 for detailed correlation and model validation procedures for these types of analyzer systems.

Note 1:For example, this guide would apply for the comparison of benzene measurements from a mid-infrared process analyzer system based on Test Method D6277 to those obtained using PTM Test Method D3606, a gas chromatography based test method. For each sample, the mid-infrared spectrum is converted into a single analyzer result using methodology (Test Method D6277) that is independent of the primary test method (Test Method D3606). However, when the same analyzer uses a multivariate model to correlate the measured mid-infrared spectrum to Test Method D3606 reference values using the methodology of Practice D8321, this guide does not apply. In this case, the direct output of the analyzer is the spectrum, and the conversion of this multivariate output to an analyzer result require results from the primary test method.

1.5This guide assumes that the analyzer sampling system is fit for use, and both analyzer and lab systems are in statistical control during the execution of the required tasks. Procedures for testing for proper function of the analyzer sampling system are beyond the scope of this guide. For ascertaining whether the systems are in statistical control, refer to Practice D6299 or other technical equivalent documents.

1.6This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.7This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Committee
D 02
DocumentType
Guide
Pages
9
PublisherName
American Society for Testing and Materials
Status
Current
Supersedes

ASTM D 7825 : 2018 Standard Practice for Generating a Process Stream Property Value through Application of a Process Stream Analyzer
ASTM D 7808 : 2018 Standard Practice for Determining the Site Precision of a Process Stream Analyzer on Process Stream Material
ASTM D 8004 : 2015 Standard Test Method for Fuel Dilution of In-Service Lubricants Using Surface Acoustic Wave Sensing
ASTM D 8340 : 2021 Standard Practice for Performance-Based Qualification of Spectroscopic Analyzer Systems

ASTM D 5191 : 2022 Standard Test Method for Vapor Pressure of Petroleum Products and Liquid Fuels (Mini Method)
ASTM D 6122 : 2021 Standard Practice for Validation of the Performance of Multivariate Online, At-Line, Field and Laboratory Infrared Spectrophotometer, and Raman Spectrometer Based Analyzer Systems
ASTM D 6299 : 2021 Standard Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance
ASTM D 8321 : 2021 Standard Practice for Development and Validation of Multivariate Analyses for Use in Predicting Properties of Petroleum Products, Liquid Fuels, and Lubricants based on Spectroscopic Measurements
ASTM D 6299 : 2022 : EDT 1 Standard Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance
ASTM D 7453 : 2018 Standard Practice for Sampling of Petroleum Products for Analysis by Process Stream Analyzers and for Process Stream Analyzer System Validation
ASTM D 7808 : 2022 Standard Practice for Determining the Site Precision of a Process Stream Analyzer on Process Stream Material
ASTM D 6299 : 2023 : REV A Standard Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance
ASTM D 6708 : 2024 Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
ASTM D 3764 : 2019 Standard Practice for Validation of the Performance of Process Stream Analyzer Systems
ASTM D 3606 : 2022 Standard Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography
ASTM D 3606 : 2024 Standard Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography
ASTM D 3764 : 2022 Standard Practice for Validation of the Performance of Process Stream Analyzer Systems
ASTM D 6277 : 2007 : R2022 Standard Test Method for Determination of Benzene in Spark-Ignition Engine Fuels Using Mid Infrared Spectroscopy
ASTM D 6299 : 2023 : EDT 1 Standard Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance
ASTM D 6708 : 2021 Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
ASTM D 4177 : 2022 Standard Practice for Automatic Sampling of Petroleum and Petroleum Products
ASTM D 6299 : 2023 Standard Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance
ASTM D 5191 : 2019 Standard Test Method for Vapor Pressure of Petroleum Products and Liquid Fuels (Mini Method)
ASTM D 3606 : 2020 : EDT 1 Standard Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography
ASTM D 3764 : 2023 Standard Practice for Validation of the Performance of Process Stream Analyzer Systems
ASTM D 6299 : 2022 Standard Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance
ASTM D 7808 : 2018 Standard Practice for Determining the Site Precision of a Process Stream Analyzer on Process Stream Material
ASTM D 3606 : 2021 Standard Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography
ASTM D 6277 : 2007 : R2017 Standard Test Method for Determination of Benzene in Spark-Ignition Engine Fuels Using Mid Infrared Spectroscopy
ASTM D 4177 : 2020 Standard Practice for Automatic Sampling of Petroleum and Petroleum Products
ASTM D 5191 : 2020 Standard Test Method for Vapor Pressure of Petroleum Products and Liquid Fuels (Mini Method)
ASTM D 5191 : 2015 Standard Test Method for Vapor Pressure of Petroleum Products (Mini Method)
ASTM D 8321 : 2022 Standard Practice for Development and Validation of Multivariate Analyses for Use in Predicting Properties of Petroleum Products, Liquid Fuels, and Lubricants based on Spectroscopic Measurements
ASTM D 4177 : 2022 : EDT 1 Standard Practice for Automatic Sampling of Petroleum and Petroleum Products
ASTM D 7453 : 2022 Standard Practice for Sampling of Petroleum Products for Analysis by Process Stream Analyzers and for Process Stream Analyzer System Validation
ASTM D 6122 : 2022 Standard Practice for Validation of the Performance of Multivariate Online, At-Line, Field and Laboratory Infrared Spectrophotometer, and Raman Spectrometer Based Analyzer Systems

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