ASTM E2776-20
(Guide)Standard Guide for Correlation of Results of Solid Particle Size Measurement Instruments
Standard Guide for Correlation of Results of Solid Particle Size Measurement Instruments
SIGNIFICANCE AND USE
4.1 It is useful to be able to obtain particle size measurement results of a user specified product from multiple instruments and to be able to correlate the results of the measurements. This capability can be advantageous in expanding the use of different technologies to make a measurement or simply to correlate results between instruments of the same technology. An example might be comparing in-process particle size measurements to final inspection particle size measurements.
4.2 The viability of this guide will need to be tested on a case-by-case basis as various products may present measurement challenges for some instruments and not all results from all instruments may be able to be correlated to all other results from all other instruments. In addition, positive results should be confirmed and improved with continued data comparisons over time using process measurements from the instruments selected.
SCOPE
1.1 This guide describes one methodology to correlate solid particle analysis results between solid particle analysis instruments for user specified products of user specified particle sizes and distributions in order to expand the capability of particle measurement throughout the manufacturing process and provide better control and efficiency. The guide is not limited to instrument type or product type.
1.2 Warning—Not all instruments may correlate to all other instruments for various user specified products and size ranges. Instruments may measure different particle features, and they may also measure the same particle features differently and thus correlating the results of any two may be possible for some products but not possible for others. It is also the case that certain materials can be altered by the instruments measuring them which would eliminate them from consideration under this guide if the instrument’s results are determined based on measurements made after the instrument has altered the user specified product.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This 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.
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This 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.
Designation: E2776 − 20
Standard Guide for
Correlation of Results of Solid Particle Size Measurement
1
Instruments
This standard is issued under the fixed designation E2776; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Terminology
1.1 This guide describes one methodology to correlate solid 2.1 Definitions of Terms Specific to This Standard:
particle analysis results between solid particle analysis instru- 2.1.1 bin, n—a user specified division of the overall particle
mentsforuserspecifiedproductsofuserspecifiedparticlesizes
size range of a user specified product.
and distributions in order to expand the capability of particle
2.1.2 correlation, n—mathematical equation(s) relating one
measurement throughout the manufacturing process and pro-
set of numerical values to another.
vide better control and efficiency. The guide is not limited to
2.1.3 particle analysis instrument, n—any instrument of any
instrument type or product type.
type that can produce a particle size distribution measurement
1.2 Warning—Not all instruments may correlate to all
of a product. There is no restriction on technology or method-
other instruments for various user specified products and size
ology used by the instrument to measure particles nor is there
ranges. Instruments may measure different particle features,
any restriction of particle characteristics used to report results
and they may also measure the same particle features differ-
of the measurement.
ently and thus correlating the results of any two may be
2.1.4 user specified product, n—indicates a product manu-
possible for some products but not possible for others. It is also
factured by the user to a specified size distribution, usually
the case that certain materials can be altered by the instruments
indicated by common sieve screen sizes.
measuring them which would eliminate them from consider-
ation under this guide if the instrument’s results are determined
3. Summary of Guide
based on measurements made after the instrument has altered
the user specified product. 3.1 This guide describes a method which can be used to
correlate results between instruments which measure particle
1.3 The values stated in SI units are to be regarded as
size, and distribution, of materials by the same or different
standard. No other units of measurement are included in this
parameters and principles.
standard.
3.2 The primary interest is the correlation of particle size
1.4 This standard does not purport to address all of the
measurements of user specified products.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3.3 This guide can be used for any two particle measuring
priate safety, health, and environmental practices and deter-
instruments which output a user specified distribution and have
mine the applicability of regulatory limitations prior to use.
the capacity to shift bin boundaries within the software.
1.5 This international standard was developed in accor-
Therefore, a set of sieves cannot correlate to another
dance with internationally recognized principles on standard-
instrument, but another instrument may correlate to the set of
ization established in the Decision on Principles for the
sieves. Ideally, the bin boundaries for the correlating instru-
Development of International Standards, Guides and Recom-
ment would match the bin boundaries of the primary
mendations issued by the World Trade Organization Technical
instrument, or if correlating to sieves, match the range of each
Barriers to Trade (TBT) Committee.
corresponding sieve, but if they do not, the method described
in this guide could be used to adjust the individual bin
boundaries used by the correlating instrument to make the
volume percent detected for each bin closely match the percent
retained by each corresponding bin of the primary instrument
1
This guide is under the jurisdiction of ASTM Committee E29 on Particle and
or set of sieves.
Spray Characterization and is the direct responsibility of Subcommittee E29.02 on
Non-Sieving Methods.
3.4 The guide is valid for any two instruments as long as it
Current edition approved Oct. 1, 2020. Published October 2020. Originally
can be demonstrated that the correlation results are useful to
approved in 2018. Last previous edition approved in 2018 as E2776 – 18. DOI:
10.1520/E2776-20. the user.
*A Summary of Changes section app
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E2776 − 18 E2776 − 20
Standard Guide for
Correlation of Results of Solid Particle Size Measurement
1
Instruments
This standard is issued under the fixed designation E2776; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Scope*
1.1 This guide describes one methodology to correlate solid particle analysis results between solid particle analysis instruments
for user specified products of user specified particle sizes and distributions in order to expand the capability of particle
measurement throughout the manufacturing process and provide better control and efficiency. The guide is not limited to
instrument type or product type.
1.2 Warning—All Not all instruments may not correlate to all other instruments for various user specified products and size
ranges. Instruments may measure different particle features, and they may also measure the same particle features differently and
thus correlating the results of any two may be possible for some products but not possible for others. It is also the case that certain
materials can be altered by the instruments measuring them which would eliminate them from consideration under this guide if
the instrument’s results are determined based on measurements made after the instrument has altered the user specified product.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 This 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.
1
This guide is under the jurisdiction of ASTM Committee E29 on Particle and Spray Characterization and is the direct responsibility of Subcommittee E29.02 on
Non-Sieving Methods.
Current edition approved April 1, 2018Oct. 1, 2020. Published May 2018October 2020. Originally approved in 2018. Last previous edition approved in 2018 as E2776
– 18. DOI: 10.1520/E2776-18.10.1520/E2776-20.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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E2776 − 20
2. Terminology
2.1 Definitions of Terms Specific to This Standard:
2.1.1 bin, n—a user specified division of the overall particle size range of a user specified product.
2.1.2 correlation, n—mathematical equation(s) relating one set of numerical values to another.
2.1.3 particle analysis instrument, n—any instrument of any type that can produce a particle size distribution measurement of a
product. There is no restriction on technology or methodology used by the instrument to measure particles nor is there any
restriction of particle characteristics used to report results of the measurement.
2.1.4 user specified product, n—indicates a product manufactured by the user to a specified size distribution, usually indicated by
common sieve screen sizes.
3. Summary of Guide
3.1 This guide describes a method which can be used to correlate results between instruments which measure particle size, and
distribution, of materials by the same or different parameters and principles.
3.2 The primary interest is the correlation of particle size measurements of user specified products.
3.3 This guide can be used for any two particle measuring instruments which output a user specified distribution and have the
capacity to shift bin boundaries within the software. Therefore, a set of sieves cannot correlate to another instrument, but another
instrument may correlate to the set of sieves. Ideally, the bin boundaries for the correlating instrument would match the bin
boundaries of the primary instrument, or if correlating to sieves, match the range of each corresponding sieve, but if they do not,
the method described i
...
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