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GB/T 19077-2024: Particle size analysis - Laser diffraction methods
Status: Valid GB/T 19077: Evolution and historical versions
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| GB/T 19077-2024 | English | 1064 |
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Particle size analysis - Laser diffraction methods
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GB/T 19077-2024
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| GB/T 19077-2016 | English | 620 |
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Particle size analysis -- Laser diffraction methods
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| GB/T 19077.1-2008 | English | RFQ |
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Particle size analysis -- Laser diffraction methods -- Part 1: General principles
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GB/T 19077.1-2008
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| GB/T 19077.1-2003 | English | RFQ |
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Particle size analysis -- Laser diffraction method
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GB/T 19077.1-2003
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PDF similar to GB/T 19077-2024
Basic data | Standard ID | GB/T 19077-2024 (GB/T19077-2024) | | Description (Translated English) | Particle size analysis - Laser diffraction methods | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A28 | | Classification of International Standard | 19.120 | | Word Count Estimation | 53,553 | | Date of Issue | 2024-10-26 | | Date of Implementation | 2025-05-01 | | Older Standard (superseded by this standard) | GB/T 19077-2016 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 19077-2024: Particle size analysis - Laser diffraction methods---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT19077-2024
ICS 19.120
CCSA28
National Standard of the People's Republic of China
Replaces GB/T 19077-2016
Particle size analysis laser diffraction method
(ISO 13320.2020, IDT)
Released on October 26, 2024
Implementation on May 1, 2025
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms, definitions and symbols 1
3.1 Terms and Definitions 1
3.2 Symbols 5
4 Principle 6
4.1 Overview 6
4.2 Theory 7
4.3 Typical Instrumentation and Optical Arrangement 7
4.4 Measurement Area 9
4.5 Application and Sample Description 9
4.6 Offline Measurement 9
4.7 Inline Measurement 10
4.8 Line in measurement 10
4.9 Online Measurement 10
4.10 Scattering and Detectors 10
5 Operation requirements and operating procedures 10
5.1 Instrument placement 10
5.2 Dispersion Gas 11
5.3 Liquid dispersion medium 11
5.4 Sample inspection, preparation, dispersion and sample concentration 11
5.5 Measurement 12
5.6 Resolution and Sensitivity 13
6 Accuracy, Repeatability and Instrument Validation 14
6.1 General Principles 14
6.2 Accuracy 15
6.3 Instrument Repeatability 15
6.4 Method reproducibility 15
6.5 Accuracy under intermediate precision conditions 16
7 Test Report 16
7.1 General Principles 16
7.2 Sampling 17
7.3 Dispersion 17
7.4 Laser diffraction particle size distribution 17
7.5 Analyst Identification 17
Appendix A (Informative) Theoretical Background of Laser Diffraction 18
Appendix B (Informative) Precautions for Dispersing Liquids 32
Appendix C (Informative) Recommendations on Dispersion Methods 33
Appendix D (Informative) Recommendations for Instrument Preparation 34
Appendix E (Informative) Error Sources and Diagnosis 35
Appendix F (Informative) Recommendations on Refractive Index 37
Appendix G (Informative) Robustness and Durability of Laser Diffraction Particle Size Analysis 39
Appendix H (Normative) Certified Standards, Standards and Comparison Parameters 42
Reference 45
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 19077-2016 “Particle size analysis by laser diffraction method”.
In addition to the integration and editorial changes, the main technical changes are as follows.
--- Added, changed and deleted some terms and definitions (see 3.1, 3.1 of the.2016 edition);
--- Added, changed and deleted some symbols (see 3.2, 3.2 of the.2016 edition);
--- Added descriptions of offline measurement, online measurement, in-line measurement and line-side measurement applications (see Chapter 4);
--- Increased measurement content and requirements such as robustness, sensitivity, and resolution (see Chapter 5);
--- Added the "Accuracy, Repeatability and Instrument Validation" section (see Chapter 6);
--- Deleted the reference to ISO 9276-4 (see Chapter 7 of the.2016 edition);
--- Deleted the normative references ISO 14488 and ISO 14887 (see 6.2.3.3 of the.2016 edition);
--- Added information requirements for laser diffraction particle size distribution in the test report (see 7.4);
--- Added “certified reference samples, standard samples and comparison parameters” (see Appendix H).
This document is equivalent to ISO 13320.2020 "Particle size analysis - Laser diffraction method".
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed and coordinated by the National Technical Committee for Particle Characterization and Sorting and Screen Standardization (SAC/TC168).
This document was drafted by. Shanghai Institute of Measurement and Testing Technology, China Institute of Metrology, Yanqi Lake Basic Manufacturing Technology Research Institute
(Beijing) Co., Ltd., Dandong Better Instrument Co., Ltd., Zhuhai OMEC Instrument Co., Ltd., Beijing Coast Hongmeng Reference Material Technology Co., Ltd.
Responsible Company, Guangchangda New Materials Technology Service (Shenzhen) Co., Ltd., and Core Element (Hangzhou) Technology Development Co., Ltd.
The main drafters of this document are. Wu Limin, Zhang Wenge, Hou Changge, Chen Yongkang, Liu Junjie, Dong Qingyun, Fu Xiaowei, Fan Jilai, Dou Xiaoliang, Yu Daoke,
Zhou Nanjia.
This document was first published in.2003 as GB/T 19077.1-2003, revised for the first time in.2008, and revised for the second time in.2016.
GB/T 19077-2016, this is the third revision.
introduction
Laser diffraction technology has been developed to become the main method of particle size analysis (PSDs). The success of this technology is based on its ability to
It is applicable to a variety of particle systems. The technique is fast, can be automated, and a variety of commercial instruments are available.
The correct use of the instrument and the reasonable interpretation of the measurement results still require caution.
Since ISO 13320-1 was first published in.1999, the understanding of light scattering from different materials and the design of instruments have advanced significantly.
This is particularly evident in the ability to measure very fine particles. The method was first revised in.2009 and was adopted by ISO 13320.
In.2009, it was replaced by the IEEE Spectrum Distributed Measurement System (EDS), and since then this method has been more widely used. In recent applications, not only the determination of measurement accuracy has been put forward, but also the
This document contains the latest developments.
Particle size analysis laser diffraction method
1 Scope
This document specifies methods for measuring particle size distribution in various two-phase systems by analyzing the light scattering properties of particles, and for measuring
Methods for instrument validation. These particles include powders, sprays, aerosols, suspensions, emulsions and bubbles in liquids. This document does not cover specific
Specific requirements for measuring the particle size distribution of fixed materials.
This document is applicable to particles with a size range of 0.1μm~3mm. Some specially designed instruments and some auxiliary conditions can be used to
The particle size analysis range is extended to below 0.1μm or above 3mm.
This technique assumes spherical particles in the optical model, so for both spherical and non-spherical particles, the reported particle size distribution is based on
The theoretical value of the volume sum of the scattering pattern of spherical particles is matched with the measured scattering pattern value. For non-spherical particles, the particle size distribution results can be
The results can be different from those obtained based on other physical principles such as sedimentation and screening.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
Note. GB/T 15445.1-2008 Presentation of particle size analysis results Part 1.Graphical representation (ISO 9276-1.1998, IDT)
ISO 9276-2 Presentation of results of particle size analysis Part 2.Calculation of mean particle diameter and moments from particle size distribution
Note. GB/T 15445.2-2006 Presentation of particle size analysis results Part 2.Calculation of mean particle diameter and moments from particle size distribution (ISO 9276-2.
2001, IDT)
3 Terms, definitions and symbols
3.1 Terms and Definitions
The following terms and definitions apply to this document.
3.1.1
absorption
Light intensity reduction due to non-scattering reasons.
3.1.2
Accuracy
The degree of agreement between a test result or measurement and the true value.
Note 1.In practice, the true value is replaced by the accepted reference value.
NOTE 2 The term “accuracy”, when applied to a set of test or measurement results, consists of a random error component and a systematic error component, also known as a bias component.
Note 3 to entry. Accuracy is a combination of trueness and precision.
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