ASTM-D4821:2015 Edition

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D4821-15 Standard Guide for Carbon Black—Validation of Test Method Precision and Bias

Published By	Publication Date	Number of Pages
ASTM	2015	13

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Categories: 83.040.20 - Rubber compounding ingredients, ASTM

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Description

ASTM D4821-15

Historical Standard: Standard Guide for Carbon Black—Validation of Test Method Precision and Bias

ASTM D4821

Scope

1.1 This guide covers procedures for using the ASTM Standard Reference Blacks2 (SRBs) and the HT and INR Iodine Number Standards to continuously monitor the precision of those carbon black test methods for which reference values have been established. It also offers guidelines for troubleshooting various test methods.

1.2 This guide establishes procedures for the use of x-charts to continuously monitor those tests listed in Section 2 for within-lab precision (repeatability) and between-lab accuracy (reproducibility).

1.3 This guide provides a statistical procedure for improving test reproducibility when a laboratory cannot physically calibrate its apparatus to obtain the reference values of the ASTM reference blacks, within the ranges given in this guide.

Keywords

accuracy; ASTM reference blacks; carbon black; continuously monitoring testing; normalization; precision; regression; repeatability; reproducibility; statistical x-charts;

ICS Code

ICS Number Code 83.040.20 (Rubber compounding ingredients)

DOI: 10.1520/D4821-15

Additional information

Standard Title	D4821-15 Standard Guide for Carbon Black—Validation of Test Method Precision and Bias
Published Code	ASTM
Publication Date	2015
Pages Count	13
ICS Codes	83.040.20 - Rubber compounding ingredients