19.120 粒度分析、筛分 标准查询与下载

DIN ISO 22412:2018 粒径分析. 动态光散射(DLS) (ISO 22412-2017)

This document specifies the application of dynamic light scattering (DLS) to the measurement of average hydrodynamic particle size and the measurement of the size distribution of mainly submicrometre-sized particles, emulsions or fine bubbles dispersed in liquids. DLS is also referred to as "quasi-elastic light scattering (QELS)" and "photon correlation spectroscopy (PCS)", although PCS actually is one of the measurement techniques. This document is applicable to the measurement of a broad range of dilute and concentrated suspensions. The principle of dynamic light scattering for a concentrated suspension is the same as for a dilute suspension. However, specific requirements for the instrument setup and specification of test sample preparation are required for concentrated suspensions. At high concentrations, particle-particle interactions and multiple light scattering can become dominant and can result in apparent particle sizes that differ between concentrated and dilute suspensions.

Particle size analysis - Dynamic light scattering (DLS) (ISO 22412:2017)

DIN ISO 9276-2:2018 粒度分析结果的表示.第2部分:平均粒度/直径和粒度分布的力矩的计算(ISO 9276-2-2014)

This part of ISO 9276 provides relevant equations and coherent nomenclatures for the calculation of moments, mean particle sizes and standard deviations from a given particle size distribution. Two notation systems in common use are described. One is the method of moments while the second describes the moment-ratio method. The size distribution may be available as a histogram or as an analytical function. The equivalent diameter of a particle of any shape is taken as the size of that particle. Particle shape factors are not taken into account. It is essential that the measurement technique is stated in the report in view of the dependency of sizing results of measurement principle. Samples of particles measured are intended to be representative of the population of particles. For both notation systems, numerical examples of the calculation of mean particle sizes and standard deviation from histogram data are presented in an annex. The accuracy of the mean particle size may be reduced if an incomplete distribution is evaluated. The accuracy may also be reduced when very limited numbers of size classes are employed.

Representation of results of particle size analysis - Part 2: Calculation of average particle sizes/diameters and moments from particle size distributions (ISO 9276-2:2014)

ISO/TR 19997:2018 ζ电位测量良好实践指南

Guidelines for good practices in zeta-potential measurement

KS L ISO 13099-2:2018 胶体体系 - zeta电位测定方法 - 第2部分:光学方法

Colloidal systems — Methods for zetapotential determination — Part 2: Optical methods

KS L ISO 13099-1:2018 胶体系 - ζ电位测定方法 - 第1部分:电声和电动力学现象

Colloidal systems — Methods for zeta-potential determination — Part 1: Electroacoustic and electrokinetic phenomena

KS L ISO 13099-3-2018(2023) 胶体体系ζ电位测定方法第3部分:声学方法

Colloidal systems — Methods for zeta potential determination — Part 3: Acoustic methods

KS L ISO 13099-2-2018(2023) 胶体体系ζ电位测定方法第2部分:光学方法

Colloidal systems — Methods for zetapotential determination — Part 2: Optical methods

KS L ISO 13099-1-2018(2023) 胶体体系ζ电位测定方法第1部分:电声和电动现象

Colloidal systems — Methods for zeta-potential determination — Part 1: Electroacoustic and electrokinetic phenomena

KS L ISO 13099-3:2018 胶体系统 - ζ电位测定方法 - 第3部分:声学方法

Colloidal systems — Methods for zeta potential determination — Part 3: Acoustic methods

KS L ISO 13099-3-2018 胶体系统 - ζ电位测定方法 - 第3部分:声学方法

Colloidal systems — Methods for zeta potential determination — Part 3: Acoustic methods

KS L ISO 13099-1-2018 胶体系 - ζ电位测定方法 - 第1部分:电声和电动力学现象

Colloidal systems — Methods for zeta-potential determination — Part 1: Electroacoustic and electrokinetic phenomena

KS L ISO 13099-2-2018 胶体体系 - zeta电位测定方法 - 第2部分:光学方法

Colloidal systems — Methods for zetapotential determination — Part 2: Optical methods

ASTM D6940-18 测量散装固体筛析偏析倾向的标准实施规程

Standard Practice for Measuring Sifting Segregation Tendencies of Bulk Solids

BS ISO 21501-4:2018 粒度分布测定.单粒子光干扰法.无菌空间光散射尘埃粒子计数器

Determination of particle size distribution. Single particle light interaction methods. Light scattering airborne particle counter for clean spaces

ASTM D4438-13(2018)e1 催化剂和催化剂载体通过电子计数的粒度分布的标准测试方法

1.1 This test method covers the determination of particle size distribution of catalyst and catalyst carrier particles using an electroconductive sensing method and is one of several valuable methods for the measurement of particle size. 1.2 The range of particle sizes investigated was 20 to 150 µm (see IEEE/ASTM SI 10) equivalent spherical diameter. The technique is capable of measuring particles above and below this range. The instrument used for this method is an electric current path of small dimensions that is modulated by individual particle passage through an aperture, and produces individual pulses of amplitude proportional to the particle volume. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Particle Size Distribution of Catalysts and Catalyst Carriers by Electronic Counting

ISO 21501-4:2018 粒径分布测定.单粒子光干扰法.第4部分:无菌空间光散射尘埃粒子计数器

This document describes a calibration and verification method for a light scattering airborne particle counter (LSAPC), which is used to measure the size distribution and particle number concentration of particles suspended in air. The light scattering method described in this document is based on single particle measurements. The typical size range of particles measured by this method is between 0,1 μm and 10 μm in particle size. Instruments that conform to this document are used for the classification of air cleanliness in cleanrooms and associated controlled environments in accordance with ISO 14644-1 and ISO 14644-2, as well as the measurement of number and size distribution of particles in various environments. The following parameters are within the scope of this document: — size setting error; — counting efficiency; — size resolution; — false count; — maximum particle number concentration; — sampling flow rate error; — sampling time error; — response rate; — calibration interval; — reporting results from test and calibration.

Determination of particle size distribution - Single particle light interaction methods - Part 4: Light scattering airborne particle counter for clean spaces

BS ISO 18747-1:2018 沉降法测定颗粒密度 等密度插值法

1   Scope This document specifies a method for the determination of the density of solid particles or liquid droplets (below referred to generically as “particles”) dispersed in a liquid. The method is based on the fact that a particle wholly immersed in fluid experiences buoyancy equal to the weight of the fluid displaced by this particle (Archimedean principle), and if its mass force matches the buoyant force, it stops gravitational or centrifugal settling/creaming and the particle remains suspended. This implies that the density of the particle equals the density of the liquid. In this document, particle density determination is conducted by analysing the direction of the migration movement of particles dispersed in liquids with densities that are lower and higher than particle density. All particles are of the same material composition.

Determination of particle density by sedimentation methods - Isopycnic interpolation approach

ASTM E2814-18 工业编织线过滤布的标准规范

Standard Specification for Industrial Woven Wire Filter Cloth

ASTM E2776-18 固体粒度测量仪器结果相关标准指南

Standard Guide for Correlation of Results of Solid Particle Size Measurement Instruments

ISO 18747-1:2018 沉降法测定颗粒密度.第1部分:等密度插值法

This document specifies a method for the determination of the density of solid particles or liquid droplets (below referred to generically as “particles”) dispersed in a liquid. The method is based on the fact that a particle wholly immersed in fluid experiences buoyancy equal to the weight of the fluid displaced by this particle (Archimedean principle), and if its mass force matches the buoyant force, it stops gravitational or centrifugal settling/creaming and the particle remains suspended. This implies that the density of the particle equals the density of the liquid. In this document, particle density determination is conducted by analysing the direction of the migration movement of particles dispersed in liquids with densities that are lower and higher than particle density. All particles are of the same material composition.

Determination of particle density by sedimentation methods - Part 1: Isopycnic interpolation approach