GB/T 19077-2024 PDF English
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GB/T 19077: Historical versions
| Standard ID | USD | BUY PDF | Delivery | Standard Title (Description) | Status |
| GB/T 19077-2024 | 995 | Add to Cart | Auto, 9 seconds. | Particle size analysis - Laser diffraction methods | Valid |
| GB/T 19077-2016 | 620 | Add to Cart | Auto, 9 seconds. | Particle size analysis -- Laser diffraction methods | Valid |
| GB/T 19077.1-2008 | RFQ | ASK | 4 days | Particle size analysis -- Laser diffraction methods -- Part 1: General principles | Obsolete |
| GB/T 19077.1-2003 | RFQ | ASK | 9 days | Particle size analysis -- Laser diffraction method | Obsolete |
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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/GBT19077-2024GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 19.120 CCS A 28 GB/T 19077-2024 / ISO 13320.2020 Replacing GB/T 19077-2016 Particle Size Analysis – Laser Diffraction Methods (ISO 13320.2020, IDT) Issued on: OCTOBER 26, 2024 Implemented on: MAY 1, 2025 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 4 Introduction... 6 1 Scope... 7 2 Normative References... 7 3 Terms, Definitions and Symbols... 8 3.1 Terms and definitions... 8 3.2 Symbols... 14 4 Principle... 16 4.1 General... 16 4.2 Theory... 16 4.3 Typical instrument and optical arrangement... 17 4.4 Measurement zone... 19 4.5 Application and sample presentation... 19 4.6 Off-line measurements... 20 4.7 In-line measurements... 20 4.8 Online measurements... 21 4.9 At-line measurements... 21 4.10 Scattering and detectors... 21 5 Operational Requirements and Procedures... 22 5.1 Instrument location... 22 5.2 Dispersion gases... 22 5.3 Dispersion liquids... 22 5.4 Sample inspection, preparation, dispersion and concentration... 22 5.5 Measurement... 24 5.6 Resolution and sensitivity... 26 6 Accuracy Repeatability and Instrument Qualification... 28 6.1 General... 28 6.2 Accuracy... 29 6.3 Instrument repeatability... 30 6.4 Method repeatability... 30 6.5 Accuracy under intermediate precision conditions... 31 7 Reporting of Results... 32Foreword
This Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for Standardization – Part 1.Rules for the Structure and Drafting of Standardizing Documents. This Document replaced GB/T 19077-2016 Particle Size Analysis - Laser Diffraction Methods. Compared with GB/T 19077-2016, the major technical changes of this Document are as follows besides the structural adjustments and the editorial modifications. --- Add, change and delete some terms and definitions (see 3.1 of this Edition; 3.1 of the 2016 Edition); --- Add, change and delete some symbols (see 3.2 of this Edition; 3.2 of the 2016 Edition); --- Add the application descriptions for off-line measurement, on-line measurement, in-line measurement, and at-line measurement (see Clause 4 of this Edition); --- Add the measurement content and requirements such as robustness, sensitivity, and resolution (see Clause 5 of this Edition); --- Add a Clause on "Accuracy, Repeatability, and Instrument Validation" (see Clause 6 of this Edition); --- Delete the references of ISO 9276-4 (see Clause 7 of the 2016 Edition); --- Delete the normative references of ISO 14488 and ISO 14887 (see 6.2.3.3 of the 2016 Edition); --- Add the requirement for information on laser diffraction particle size distribution in the test report (see 7.4 of this Edition); --- Add the "Certified standard samples, standard samples and comparison parameters" (see Annex H of this Edition). This Document equivalently adopted ISO 13320.2020 Particle Size Analysis – Laser Diffraction Methods. Please note some contents of this Document may involve patents. The issuing agency of this Document shall not assume the responsibility to identify these patents. This Document was proposed by and under the jurisdiction of National Technical Committee on Particle Characterization including Sieving Other Sizing Methods and Sieves of Standardization Administration of China (SAC/TC 168). Drafting organizations of this Document. Shanghai Institute of Measurement and Testing Technology; National Institute of Metrology, China; Yanqi Lake Institute of Basic Particle Size Analysis – Laser Diffraction Methods1 Scope
This Document provides guidance on instrument qualification and size distribution measurement of particles (e.g. powders, sprays, aerosols, suspensions, emulsions and gas bubbles in liquids) in many two-phase systems through the analysis of their light-scattering properties. It does not address the specific requirements of particle size measurement of specific materials. This Document is applicable to particle sizes ranging from approximately 0.1 µm to 3 mm. With special instrumentation and conditions, the applicable size range can be extended above 3 mm and below 0.1 µm. For spherical and non-spherical particles, a size distribution is reported, where the predicted scattering pattern for the volumetric sum of spherical particles matches the measured scattering pattern. This is because the technique assumes a spherical particle shape in its optical model. For non-spherical particles the resulting particle size distribution is different from that obtained by methods based on other physical principles (e.g. sedimentation, sieving).2 Normative References
The provisions in following documents become the essential provisions of this Document through reference in this Document. For the dated documents, only the versions with the dates indicated are applicable to this Document; for the undated documents, only the latest version (including all the amendments) is applicable to this Document. ISO 9276-1 Representation of results of particle size analysis – Part 1.Graphical representation NOTE. GB/T 15445.1-2008 Representation of results of particle size analysis - Part 1.Graphical representation (ISO 9276-1.1998, IDT) ISO 9276-2 Representation of results of particle size analysis – Part 2.Calculation of average particle size/diameters and moments from particle size distributions NOTE. GB/T 15445.2-2006 Representation of results of particle size analysis - Part 2.Calculation of average particle size/diameters and moments from particle size distributions (ISO 9276-2.2001, IDT) ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
