ASTM D4821-03a
Standard Guide for Carbon Black8212;Validation of Test Method Precision and Bias

Standard No.

ASTM D4821-03a

Release Date

2003

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D4821-04

Latest

ASTM D4821-20

Scope

1.1 This guide covers a procedure for using ASTM Standard Reference Blacks (SRBs) to continuously monitor the precision of those carbon black test methods for which standard values have been established. It also offers guidelines for troubleshooting various test methods.

1.2 This guide establishes the x-chart control limits to be used when continuously monitoring those tests listed in Section 2. Alternatively, these control limits may be used as a basis for comparison to testing precision computed within a laboratory.

1.3 This guide uses statistical control chart methodology as discussed in STP-15-D to determine if a laboratory's test results differ significantly from the accepted values of the SRBs.

1.4 This guide provides a statistical procedure for improving test reproducibility when a laboratory cannot physically calibrate its apparatus to obtain the standard values of the ASTM SRBs, within the ranges given in the precision statement of the test method.

1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.6 This 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 and health practices and determine the applicability of regulatory limitations prior to use.

ASTM D4821-03a history

• 2020 ASTM D4821-20 Standard Guide for Carbon Black—Validation of Test Method Precision and Bias
• 2019 ASTM D4821-19 Standard Guide for Carbon Black—Validation of Test Method Precision and Bias
• 2016 ASTM D4821-16 Standard Guide for Carbon Black&x2014;Validation of Test Method Precision and Bias
• 2015 ASTM D4821-15 Standard Guide for Carbon Black—Validation of Test Method Precision and Bias
• 2014 ASTM D4821-14 Standard Guide for Carbon Blackmdash;Validation of Test Method Precision and Bias
• 2007 ASTM D4821-07e1 Standard Guide for Carbon BlackValidation of Test Method Precision and Bias
• 2007 ASTM D4821-07 Standard Guide for Carbon Black-Validation of Test Method Precision and Bias
• 2006 ASTM D4821-06 Standard Guide for Carbon Black-Validation of Test Method Precision and Bias
• 2005 ASTM D4821-05 Standard Guide for Carbon Black8212;Validation of Test Method Precision and Bias
• 2004 ASTM D4821-04 Standard Guide for Carbon Black8212;Validation of Test Method Precision and Bias
• 2003 ASTM D4821-03a Standard Guide for Carbon Black8212;Validation of Test Method Precision and Bias
• 2003 ASTM D4821-03 Standard Guide for Carbon Black8212;Validation of Test Method Precision and Bias
• 2001 ASTM D4821-01a Standard Guide for Carbon Black8212;Validation of Test Method Precision and Bias
• 2001 ASTM D4821-01 Standard Guide for Carbon Black—Validation of Test Method Precision and Bias
• 1999 ASTM D4821-99 Standard Guide for Carbon Black8212;Validation of Test Method Precision and Bias