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Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 42351.1-2023: Preparation of particulate reference materials - Part 1: Polydisperse material based on picket fence of monodisperse spherical particles Status: Valid
Basic dataStandard ID: GB/T 42351.1-2023 (GB/T42351.1-2023)Description (Translated English): Preparation of particulate reference materials - Part 1: Polydisperse material based on picket fence of monodisperse spherical particles Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: A28 Classification of International Standard: 19.120 Word Count Estimation: 30,337 Date of Issue: 2023-03-17 Date of Implementation: 2023-07-01 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 42351.1-2023: Preparation of particulate reference materials - Part 1: Polydisperse material based on picket fence of monodisperse spherical particles---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. ICS 19.120 CCSA28 National Standards of People's Republic of China Preparation of Particulate Standard Samples Part 1.Based on monodisperse spherical particles Polydisperse standard sample of picket fence distribution (ISO /T S14411-1.2017, IDT) Released on 2023-03-17 2023-07-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee table of contentsPreface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms, definitions and symbols 1 3.1 Terms and Definitions 1 3.2 Symbol 2 4 Material Requirements for Preparation of Single Monodisperse Components3 4.1 General requirements 3 4.2 General performance requirements for single picket material 3 5 Characterization of monodisperse components3 5.1 Particle size distribution 3 5.2 Aspect Ratio4 5.3 Density 4 5.4 Refractive index 4 6 Preparation of Picket Fence Distribution 4 6.1 General 4 6.2 Preparation of individual pickets 4 6.3 Preparation of Picket Fence Distribution 5 7 Uncertainty assessment 5 7.1 General 5 7.2 Uncertainties in volume-based particle size distributions introduced by finite particle counts6 7.3 Quantity-based uncertainties in particle size distributions 7 7.4 Uncertainty in the distribution of picket fences consisting of more than two types of quasi-monodisperse particles7 7.5 Uncertainties in quantity-based particle size distributions introduced by different quantity ratios7 7.6 Uncertainties in mass-based particle size distributions introduced by various mass ratios8 7.7 Uncertainty estimation based on data before and after the mixing process 8 7.8 Uncertainties introduced by the measurement of microscopic scales9 7.9 Uncertainties introduced by surrounding particles in microscopy measurements9 7.10 Other uncertainty components 9 7.11 Combined uncertainty9 Appendix A (informative) Picket fence distribution containing two or more quasi-monodisperse particles 10 Appendix B (Informative) Examples of Reliability Calculation for Converting Quantity Particle Size Distribution to Mass Particle Size Distribution 13 Appendix C (Informative) Example of Uncertainty Estimation Based on Mixed Components and Sample Particle Size 17 Appendix D (informative) Uncertainty assessment in various situations 19 Reference 24forewordThis 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 is Part 1 of GB/T 42351 "Preparation of Particle Standard Samples". GB/T 42351 has issued the following parts. --- Part 1.Polydisperse standard samples based on the distribution of monodisperse spherical particle picket fences. This document is equivalent to ISO /T S14411-1.2017 "Preparation of Particle Standard Samples Part 1.Based on Monodisperse Spherical Particle Tips" Polydisperse Standard Samples of Pile Fence Distribution", the document type is adjusted from the ISO technical specification to the national standard of our country. Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document was proposed and managed by the National Particle Characterization and Sorting and Sieve Mesh Standardization Technical Committee (SAC/TC168). This document is drafted by. China Institute of Metrology, Qingdao Institute of Metrology, Hefei Mingyuan Testing Technology Service Co., Ltd., Beijing Coast Hongmeng Standard Material Technology Co., Ltd., Qingdao Minghua Electronic Instrument Co., Ltd., Huzhou Tianyi Calcium Industry Co., Ltd., Dandong Baite Instrument Co., Ltd., Institute of Process Engineering, Chinese Academy of Sciences, Shanghai Institute of Metrology and Testing Technology, Henan Zhongke Junxin Technology Group Co., Ltd., Shandong University of Technology, Zhuhai Truth Optical Instrument Co., Ltd., Zhejiang Ruitang Plastic Technology Co., Ltd., Henan Metrology Department Research Institute, Zhejiang Doppler Environmental Protection Technology Co., Ltd., Qingdao Zhongrui Intelligent Instrument Co., Ltd., Shenzhen Guoji Instrument Co., Ltd., Beijing Beijing Powder Technology Association, Beijing Institute of Science and Technology Analysis and Testing Institute (Beijing Physical and Chemical Analysis and Testing Center), China Machinery Productivity Promotion Center Co., Ltd., China Jiliang University. The main drafters of this document. Zhang Wenge, Liu Wei, Zheng Aifen, Dou Xiaoliang, Li Dean, Gu Ling, Dong Qingyun, Li Zhaojun, Wu Limin, Xue Weichang, Liu Wei, Zhang Fugen, Wen Yuan, Lu Xingjie, Zou Zongyong, He Chunlei, Zhu Ping, Liu Junjie, Zhou Suhong, Gao Yuan, Hou Changge, Zhu Peiwu, Chi Shunxin.IntroductionA variety of techniques can be used to measure the particle size distribution, among which when measuring a certain one-dimensional characteristic of the particle, the particle is usually equivalent to a An ideal model with equivalent particle size (usually a sphere), so in general, some other constants are required or assumed to calculate the particle size particle size distribution. Due to the different measurement properties of different technologies, the equivalent granularity becomes a measurand defined by the method, so it is necessary to Use the same method or a standardized method to compare the results. At present, through in-depth research on the influencing factors of different methods, the lack of comparability between methods can be improved. Italian situation. Since the link between different methods is related to the sample material, it is very important that the material satisfies as many physical assumptions as possible in the method. important. Known quantities of monodisperse spherical particle components are used to form a polydisperse mixture by mixing (as in "picked fence" fractions). cloth) is a feasible method. Since most particle size measurement methods assume that the particles are spherical, a single particle should be spherical. If the actual use The particles are spherical, so in terms of shape, the measurement results using different methods should agree. The advantage of spherical particles is that their size is only One parameter can be expressed, that is, particle diameter. Each component in the mixture needs to be monodisperse, so that the diameter of the particle can be traced to the Standard size, and finally a mixture with a theoretically known particle size distribution. These materials are used in the following ways. Monodisperse particulate matter fractions can be used to verify equivalence between measurements using ideal particulate matter. If a method gives the result If it deviates, it shows that this method has not been thoroughly studied, and further research on the deviation is needed. Polydisperse mixtures can be used for test methods Verify and observe its output. The results presented are a comprehensive evaluation of the method, including particle dispersion, migration, physical principles, and formation Method evaluation with more comparable results, etc. The method described in this paper is based on Ref. [22] and Ref. [23]. The second usage is applied to the development of theoretical frameworks for more accurate measurements of particle size distributions. In order to apply different particle size measurement methods method, this usage is fundamentally limited to spherical particles of equal density. This document describes a protocol for the preparation of a quasi-monodisperse spherical particle standard sample for the picket-fence distribution. GB/T 42351 aims to provide standard samples for comparison of the results of different particle size measurement techniques, and specifies the materials, Preparation and characterization, consisting of two parts. --- Part 1.Polydisperse standard samples based on the distribution of monodisperse spherical particle picket fences. Describes the polydisperse standard sample Materials and Preparation. --- Part 2.Polydisperse spherical particles. Describes the normative requirements and uncertainty and reliability tests of polydisperse standard samples. Part 1 specifies the preparation of polydisperse standard samples, and Part 2 describes the specifications of polydisperse standard samples. Preparation of Particulate Standard Samples Part 1.Based on monodisperse spherical particles Polydisperse standard sample of picket fence distribution1 ScopeThis document describes the preparation of polydisperse spherical particles based on the picket fence distribution of quasi-monodisperse standard samples and has acceptable Monodisperse component characterization with certainty, and uncertainty assessment for particle mixtures. Under appropriate technical constraints, this material is usually suitable for For all particle characterization methods. This document lists the application of this standard sample in the reliability calculation based on mass cumulative particle size distribution. This document is applicable to the certified and Undocumented standard sample preparation technical characteristics outside the general requirements.2 Normative referencesThis document has no normative references. 3 Terms, definitions and symbols 3.1 Terms and Definitions The following terms and definitions apply to this document. 3.1.1 aspect ratio aspectratio The ratio of the shortest diameter to the longest diameter of a particle feret. [Source. ISO 26824.2013, 4.5, with modifications] 3.1.2 Pycnometry pycnometry In the case of a given calibration volume, the method of obtaining the particle density according to the mass of the measured sample. [Source. ISO 26824.2013,2.4] 3.1.3 In the dry state, the mass of the particle divided by the volume it occupies (including all pores and surface fissures, open or closed). [Source. GB/T 26645.4-2018, 3.1, modified] 3.1.4 hydrostatic balance hydrostatic balance A method for measuring particle density by means of particle dynamic sedimentation velocity based on known fluid density and viscosity conditions. 3.1.5 Standard sample reference material; RM Sufficiently homogeneous and stable material with one or more specified properties that has been determined to be suitable for its intended use by the measurement process. [Source. GB/T 15000.2-2019, modified] ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 42351.1-2023_English be delivered?Answer: Upon your order, we will start to translate GB/T 42351.1-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 42351.1-2023_English with my colleagues?Answer: Yes. 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