ISO/TS 4807:2022
Reference materials for particle size measurement — Specification of requirements
This document is intended to support users of reference materials (RMs) for particle size analysis to identify suitable RMs (certified or not) for their needs. In line with the focus on users, questions on sample preparation that go beyond preparation of the sample as received by the user will not be covered by this document.
This document describes the fundamental requirements that RMs (certified or not) for the determination of particle size shall fulfil in order to be fit for a given purpose. The document is limited to a description of the fundamental principles – the discussion whether a certain numerical value is fit for purpose is beyond the scope of this document.
The scope of this document is limited to RMs (certified or not) in the form of particles. This document does not deal with any other form of RMs, like calibration grids.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviated terms
5 Basic principles
5.1 Measurand definitions in particle size analysis
5.1.1 General
5.1.2 Operationally defined measurands in particle characterisation: Equivalent diameters
5.1.3 Required detail of procedure description for operationally defined measurands
5.1.4 Conditions for equivalent diameters to coincide with the actual particle diameter
5.2 Metrological traceability of size measurement results
5.2.1 General
5.2.2 Establishing versus verifying traceability in particle characterisation
5.3 Types of RMs
5.3.1 Certified and non-certified RMs/certified and non-certified values
5.3.2 Primary/secondary/tertiary CRMs
5.3.3 Spherical/non-spherical and monodisperse/polydisperse RMs
5.4 Porous/dense RMs
6 Practical handling
7 Requirements for specific uses
7.1 General
7.2 Instrument verification/design qualification
7.3 Installation qualification
7.3.1 General
7.3.2 Type of material
7.3.3 Kind of quantity of the assigned value
7.3.4 Degree of homogeneity
7.4 Calibration
7.4.1 General
7.4.2 Type of material
7.4.3 Traceability of the certified values
7.4.4 Kind of quantity of the certified property
7.4.5 Uncertainty of the certified value
7.5 Operational qualification/demonstration of proficiency
7.5.1 General
7.5.2 Type of material
7.5.3 Kind of quantity of the certified property
7.5.4 Uncertainty of certified values
7.6 Statistical quality control/performance qualification
7.6.1 General
7.6.2 Type of material
7.6.3 Kind of quantity
7.6.4 Degree of homogeneity
7.7 Summary
Bibliography
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Related Information
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BS 1796-1:1989
Test sieving, Methods using test sieves of woven wire cloth and perforated metal plate
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BS 3406-1:1986
Methods for determination of particle size distribution, Guide to powder sampling
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BS 3625:1963
Specification for eyepiece and screen graticules for the determination of the particle size of powders
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviated terms
5 Basic principles
5.1 Measurand definitions in particle size analysis
5.1.1 General
5.1.2 Operationally defined measurands in particle characterisation: Equivalent diameters
5.1.3 Required detail of procedure description for operationally defined measurands
5.1.4 Conditions for equivalent diameters to coincide with the actual particle diameter
5.2 Metrological traceability of size measurement results
5.2.1 General
5.2.2 Establishing versus verifying traceability in particle characterisation
5.3 Types of RMs
5.3.1 Certified and non-certified RMs/certified and non-certified values
5.3.2 Primary/secondary/tertiary CRMs
5.3.3 Spherical/non-spherical and monodisperse/polydisperse RMs
5.4 Porous/dense RMs
6 Practical handling
7 Requirements for specific uses
7.1 General
7.2 Instrument verification/design qualification
7.3 Installation qualification
7.3.1 General
7.3.2 Type of material
7.3.3 Kind of quantity of the assigned value
7.3.4 Degree of homogeneity
7.4 Calibration
7.4.1 General
7.4.2 Type of material
7.4.3 Traceability of the certified values
7.4.4 Kind of quantity of the certified property
7.4.5 Uncertainty of the certified value
7.5 Operational qualification/demonstration of proficiency
7.5.1 General
7.5.2 Type of material
7.5.3 Kind of quantity of the certified property
7.5.4 Uncertainty of certified values
7.6 Statistical quality control/performance qualification
7.6.1 General
7.6.2 Type of material
7.6.3 Kind of quantity
7.6.4 Degree of homogeneity
7.7 Summary
Bibliography