ASTM Standard provides guide to interlaboratory studies.
Press Release Summary:
October 23, 2012 - Developed by D02.94, Coordinating Subcommittee on Quality Assurance and Statistics, part of Committee D02 on Petroleum Products and Lubricants, ASTM D7778 provides overview of steps needed in an interlaboratory study to obtain precision and bias statements, particularly as they relate to standards for petroleum products. Standard was developed as companion document to ASTM D6300, Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products and Lubricants.
Original Press Release
New ASTM Standard Provides Guide to Interlaboratory Studies
Press release date: October 16, 2012
The new standard, ASTM D7778, Guide for Conducting an Interlaboratory Study to Determine the Precision of a Test Method, was developed by D02.94, Coordinating Subcommittee on Quality Assurance and Statistics, part of ASTM International Committee D02 on Petroleum Products and Lubricants.
According to Alex Lau, president, TCL Consulting, and chairman of D02.94, ASTM D7778 is the answer to increasing requests from D02 members for interlaboratory study guidance. ASTM D7778 has been specifically developed as a companion document to another D02 standard, ASTM D6300, Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products and Lubricants. While ASTM D6300 is focused on statistical treatment of data, ASTM D7778 contains guidance on the planning and management of an interlaboratory study.
ASTM D7778 includes templates for ILS plan development and data return forms, as well as examples of a letter from ILS coordinators to participants, a questionnaire to collect relevant ILS testing information and a testing protocol. Lau notes that these sample documents have been developed based on more than 40 years of D02 ILS planning and execution.
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