GB/T 26645.1-2011 English PDF

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GB/T 26645.1-2011: Determination of particle size distribution by gravitational liquid sedimentation methods -- Part 1: General principles and guidelines
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GB/T 26645.1-2011	354	Add to Cart	3 days	Determination of particle size distribution by gravitational liquid sedimentation methods -- Part 1: General principles and guidelines	Valid

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Basic data

Standard ID: GB/T 26645.1-2011 (GB/T26645.1-2011)
Description (Translated English): Determination of particle size distribution by gravitational liquid sedimentation methods -- Part 1: General principles and guidelines
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A28
Classification of International Standard: 19.120
Word Count Estimation: 18,132
Date of Issue: 2011-06-16
Date of Implementation: 2012-03-01
Quoted Standard: GB/T 1713; GB/T 2000; GB/T 15445.1; GB/T 20099; ISO 758; ISO 2591-1; ISO 13317-2; ISO 13317-3
Adopted Standard: ISO 13317-1-2001, IDT
Regulation (derived from): Announcement of Newly Approved National Standards No. 9 of 2011
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the method of analysis by liquid gravity sedimentation particle size distribution of materials approach, the typical particle size range of 0. 5��m ~ 100��m. This section applies to slurry or dispersed in a liquid material emblem of grain size distribution measurements. Typically, the dispersed phase and the continuous phase density difference between the positive, but can also be used to measure a lower density than the dispersed phase emulsion droplet size distribution. Particles in the suspension can not be physical or chemical changes occur. Requires the use of hazardous materials, basic protective measures, particularly the use of low boiling volatile liquid as the continuous phase, the analyst should first explosion tests.

GB/T 26645.1-2011: Determination of particle size distribution by gravitational liquid sedimentation methods -- Part 1: General principles and guidelines

---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.
Determination of particle size distribution by gravitational liquid sedimentation methods Part 1. General principles and guidelines ICS 19.120 A28 National Standards of People's Republic of China Particle size analysis liquid gravity settling Part 1. General methods-Part 1. Generalprinciplesandguidelines (ISO 13317-1.2001, IDT) Issued on. 2011-06-16 2012-03-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ Introduction Ⅳ 1 Scope 1 2 Normative references 1 3 Terms, definitions and symbols 1 4 Principle 3 Restricted particle size, shape and porous structure 4 6 Measurement Condition 5 7 Sampling 6 8 Settlement of preparation 6 9 parallel sample measurement and calibration instruments 7 10 7 Analysis Report (Informative) Effect of Appendix A layer thickness measuring 8 Annex B (informative) as a function of the Reynolds number and Stokes' Law accuracy 9 Particles Appendix C (informative) Brownian motion caused by the displacement of 10 Effect of Annex D (informative) opening of the final settling velocity of spherical particles 11 References 13

Foreword

GB/T 26645.1 "Particle size analysis liquid gravity sedimentation method" is divided into three parts. --- Part 1. General; --- Part 2. pipetting; Part --- Section 3. X-ray gravitational sedimentation. This section GB/T 26645.1 - Part 1. This part identical with ISO 13317-1.2001 "Liquid gravity settling particle size analysis - Part 1. General" (in English). For ease of use, this section made the following editorial changes. a) "international standards in this section" to "this Part"; b) Remove the preface to the international standards; c) use the decimal symbol instead of as the decimal point symbol ",". ","; d) on the ISO 13317-1.2001 and other international standards referenced, there is tantamount to the adoption of a standard for the use of standards in place Corresponding to international standards, it has not been adopted as the standard of a direct use of international standards. This section of the Appendix A, Appendix B, Appendix C, Appendix D are informative appendices. This standard by the national particle characterization and sorting and screen Standardization Technical Committee (SAC/TC168) and focal points. This section is drafted. Shanghai Institute of Measurement and Testing Technology, Shanghai nano-technology and application National Engineering Center Limited. The main drafters of this section. Wu Limin, Xu Jian, NI Yong, Xinli Hui, Zhu Lina, Cheng Lifang.

Introduction

Gravity sedimentation particle size analysis is one of many methods of powder particle size distribution measuring a present, the method is applicable to a particle size in the range of Samples 0.5μm ~ 100μm, while meeting the Reynolds number < Deposition 0.25. No single method of particle size analysis can be applied to a variety of different types of materials, but can recommend an in most cases Methods of measurement apply. The process of enactment of this section is to ensure that different laboratories using gravity sedimentation particle size analysis The consistency, the measurement results comparable. Gravity sedimentation particle size analysis can be used to. --- As a part of research material; --- When the particle size distribution of the quality of the product is very important, as the production process quality control section; --- Become the basic terms of the contract, as the material supply of a restrictive specifications. Particle size analysis liquid gravity settling Part 1. General

1 Scope

This section GB/T 26645 specifies the method of analysis of the particle size distribution of the particulate material by liquid gravity settling, the typical particle size measurement An amount in the range of 0.5μm ~ 100μm. This section applies to the measurement of particle size distribution of the slurry or dispersed in a liquid particulate material. Often dispersed and continuous phases Is the density difference between the positive, but can also be used to measure the ratio of the low density of the dispersed phase droplet particle size distribution of the emulsion. Particles in suspension can not Physical or chemical changes. Hazardous materials need to adopt basic protective measures, particularly the use of volatile liquid used as a low boiling point even When the continuous phase, the analyst should first test explosion. Note. This section may contain materials, operations and equipment is dangerous. This section does not indicate all of the safety issues involved in the process. The use of Are concerned, should be fully considered before using security, understand the rules of operation, and skills training.

2 Normative references

The following documents contain provisions which, through reference GB/T 26645 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, we are encouraged to reach agreement under this section All parties that proposed to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 1713 pigment density Pycnometer method (GB/T 1713-2008, ISO 787-10.1993, IDT) GB/T 2000 coking products solid sampling methods GB/T 15445.1 size analysis results presentation - Part 1. graphical representation (GB/T 15445-2008, ISO 9276-1. 1998, IDT) GB/T 20099 for preparing a powder sample in a liquid dispersion method (GB/T 20099-2006, ISO 14887.2000, IDT) ISO 758 with a liquid chemical products for industrial measurement at 20 ℃ Density ISO 2591-1 screening test - Part 1. Metal braid and a metal plate punching screening test ISO 13317-2 particle size analysis liquid gravity settling Part 2. pipetting ISO 13317-3 particle size analysis liquid gravity settling - Part 3. X-ray gravitational sedimentation 3 Terms, definitions and symbols 3.1 Terms and Definitions The following terms and definitions apply to this section. 3.1.1 Eventually settling velocity terminalsettlingvelocity In the stationary particles in the liquid by gravity and the speed of the liquid applied to the resistance particles equilibrium. 3.1.2 Stokes diameter Stokesdiameter Laminar flow in the fluid in the same particle settling velocity equal freedom homogeneous sphere diameter. 3.1.3 Opening openpores Hole communicating with the outer surface of the particles. ......

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