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ASTM D 4483 : 2014 : REV A

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

Standard Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries

Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Superseded by

ASTM D 4483 : 2018

Language(s)

English

Published date

01-05-2014

£89.84
Excluding VAT

Committee
D 11
DocumentType
Standard Practice
Pages
59
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

1.1This practice covers guidelines for evaluating precision and serves as the governing practice for interlaboratory test programs (ITP) used to evaluate precision for test methods as used in the rubber manufacturing and the carbon black industries. This practice uses the basic one way analysis of variance calculation algorithms of Practice E691. Although bias is not evaluated in this practice, it is an essential concept in understanding precision evaluation.

1.2This practice applies to test methods that have test results expressed in terms of a quantitative continuous variable. Although exceptions may occur, it is in general limited to test methods that are fully developed and in routine use in a number of laboratories.

1.3Two precision evaluation methods are given that are described as robust statistical procedures that attempt to eliminate or substantially decrease the influence of outliers. The first is a General Precision procedure intended for all test methods in the rubber manufacturing industry, and the second is a specific variation of the general precision procedure designated as Special Precision, that applies to carbon black testing. Both of these procedures use the same uniform level experimental design and the Mandel h and k statistics to review the precision database for potential outliers. However, they use slight modifications in the procedure for rejecting incompatible data values as outliers. The Special Precision procedure is specific as to the number of replicates per database cell or material-laboratory combination.

1.4This practice is divided into the following sections:

Section

Scope

1

Referenced Documents

2

Terminology

3

Significance and Use

4

Precision Evaluation—General Precision and Special Precision

5

Steps in Organizing an Interlaboratory Test Program (ITP)

6

Overview of the General Precision Analysis Procedure

7

General Precision: Analysis Step 1

8

 Preliminary Graphical Data Review

8.1

 Calculation of Precision for Original Database

8.2

 Detection of Outliers at 5 % Significance Level Using h and k Statistics

8.3

 Generation of Revision 1 Database Using Outlier Treatment Option 1 or 2

8.4

General Precision: Analysis Step 2

9

Calculation of Precision for Revision 1 Database

9.1

 Detection of Outliers at 2 % Significance Level Using h and k Statistics

9.1

 Generation of Revision 2 Database Using Outlier Treatment Option 1 or 2

9.1.2

General Precision: Analysis Step 3

10

 Calculation of Precision Using Revision 2 Database

10.1

Special Precision Analysis—Carbon Black Testing

11

Format for Precision Table and Clause in Test Method Standards

12

Preparation of Report for Precision Analysis

13

Definitions for Selected Terms Concerned with Precision and Testing

Annex A1

Statistical Model for Interlaboratory Testing Programs

Annex A2

Calculating the h and k Consistency Statistics for Outliers

Annex A3

Spreadsheet Calculation Formulas, Table Layout, and Calculation Sequence

Annex A4

Procedure for Calculating Replacement Values of Deleted Outliers

Annex A5

Example of General Precision Evaluation—Mooney Viscosity Testing

Annex A6


1.5Six annexes are presented; these serve as supplements to the main body of this practice. Annex A1 and Annex A2 are given mainly as background information that is important for a full understanding of precision evaluation. Annex A3 – Annex A5 contain detailed instructions and procedures needed to perform the operations as called for in various parts of the practice. The use of these annexes in this capacity avoids long sections of involved instruction in the main body of this practice. This allows for a better presentation and understanding of the central concepts involved in the evaluation of precision. Annex A6 is also important; it gives a complete example of precision evaluation that illustrates all of the procedures and options likely to be encountered in any precision evaluation, from the simple to the most complex.

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

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ASTM D 751 : 2019 Standard Test Methods for Coated Fabrics
ASTM D 5099 : 2008 : R2017 Standard Test Methods for Rubber—Measurement of Processing Properties Using Capillary Rheometry
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ASTM D 3185 : 2006 : R2016 Standard Test Methods for Rubber—Evaluation of SBR (Styrene-Butadiene Rubber) Including Mixtures With Oil
ASTM D 3189 : 2006 : R2016 Standard Test Methods for Rubber—Evaluation of Solution BR (Polybutadiene Rubber)
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ASTM D 471 : 2016 : REV A Standard Test Method for Rubber Property—Effect of Liquids
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ASTM D 6915 : 2017 : EDT 1 Standard Practice for Carbon Black—Evaluation of Standard Reference Blacks
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ASTM D 2663 : 2014 : R2019 Standard Test Methods for Carbon Black—Dispersion in Rubber
ASTM D 297 : 2015 Standard Test Methods for Rubber Products—Chemical Analysis
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ASTM D 531 : 2015 Standard Test Method for Rubber Property—Pusey and Jones Indentation
ASTM D 1278 : 1991 : REV A : R2015 Standard Test Methods for Rubber from Natural Sources—Chemical Analysis
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ASTM D 380 : 1994 : R2012 Standard Test Methods for Rubber Hose
ASTM D 6049 : 2003 : R2017 Standard Test Method for Rubber Property—Measurement of the Viscous and Elastic Behavior of Unvulcanized Raw Rubbers and Rubber Compounds by Compression Between Parallel Plates
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ASTM D 3568 : 2003 : R2018 Standard Test Methods for Rubber—Evaluation of EPDM (Ethylene Propylene Diene Terpolymers) Including Mixtures With Oil
ASTM D 2240 : 2015 : EDT 1 Standard Test Method for Rubber Property—Durometer Hardness
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ASTM F 1957 : 1999 : R2017 Standard Test Method for Composite Foam Hardness-Durometer Hardness
ASTM D 1414 : 2015 Standard Test Methods for Rubber O-Rings
ASTM D 6515 : 2000 : R2016 Standard Test Method for Rubber Shaft Seals Determination of Recovery From Bending
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ASTM D 1514 : 2015 Standard Test Method for Carbon Black—Sieve Residue
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ASTM D 7121 : 2005 : R2018 Standard Test Method for Rubber Property—Resilience Using Schob Type Rebound Pendulum
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ASTM D 1508 : 2012 : R2017 Standard Test Method for Carbon Black, Pelleted Fines and Attrition
ASTM D 7427 : 2016 Standard Test Method for Immunological Measurement of Four Principal Allergenic Proteins (Hev b 1, 3, 5 and 6.02) in Hevea Natural Rubber and Its Products Derived from Latex
ASTM D 3848 : 2003 : R2018 Standard Test Methods for Rubber—Evaluation of NBR (Acrylonitrile-Butadiene Copolymers) Mixed With Carbon Black
ASTM D 750 : 2012 : R2017 Standard Practice for Rubber Deterioration Using Artificial Weathering Apparatus
ASTM D 2084 : 2019 Standard Test Method for Rubber Property—Vulcanization Using Oscillating Disk Cure Meter
ASTM D 4986 : 2018 Standard Test Method for Horizontal Burning Characteristics of Cellular Polymeric Materials
ASTM D 5666 : 1995 : R2019 Standard Test Method for Rubber Chemical Antidegradants—Purity of <emph type="bdit" >p</emph>-Phenylenediamine (PPD) Antidegradants by High Performance Liquid Chromatography
ASTM D 6845 : 2018 Standard Test Method for Silica, Precipitated, Hydrated—CTAB (Cetyltrimethylammonium Bromide) Surface Area
ASTM D 2228 : 2004 : R2015 Standard Test Method for Rubber Property—Relative Abrasion Resistance by Pico Abrader Method
ASTM D 7662 : 2015 Standard Test Method for Carbon Content in Carbon Black Feedstock Oils
ASTM D 5668 : 2009 : R2014 Standard Test Methods for Rubber From Synthetic Sources—Volatile Matter

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