19.120 粒度分析、筛分 标准查询与下载



共找到 710 条与 粒度分析、筛分 相关的标准,共 48

This document specifies a method for the application of small-angle X-ray scattering (SAXS) to the estimation of mean particle sizes in the 1 nm to 100 nm size range. It is applicable in dilute dispersions where the interaction and scattering effects between the particles are negligible. This document describes several data evaluation methods: the Guinier approximation, model-based data fitting, Monte- Carlo–based data fitting, the indirect Fourier transform method and the expectation maximization method. The most appropriate evaluation method is intended to be selected by the analyst and stated clearly in the report. While the Guinier approximation only provides an estimate for the mean particle diameter, the other methods also give insight in the particle size distribution.

Particle size analysis — Small angle X-ray scattering (SAXS)

ICS
19.120
CCS
发布
2020-10-05
实施

1.1 These test methods use air permeability to determine an envelope-specific surface area and its associated average equivalent spherical diameter (from 0.2 to 75 µm) of powders. Two test methods are described: One test method for inorganic materials (Test Method 1), and another test method for organic materials (Test Method 2). The values obtained are not intended to be absolute but are generally useful on a relative basis for control purposes. 1.2 Units—With the exception of the values for density and the mass used to determine density, for which the use of the gram per cubic centimetre (g/cm3 ) and gram (g) units is the longstanding industry practice; and the units for pressure, cm H2O – also long-standing practice; the values in SI units are to be regarded as standard. 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 Methods for Estimating Average Particle Size of Powders Using Air Permeability

ICS
19.120
CCS
发布
2020-10-01
实施

1.1 This guide describes one methodology to correlate solid particle analysis results between solid particle analysis instruments for user specified products of user specified particle sizes and distributions in order to expand the capability of particle measurement throughout the manufacturing process and provide better control and efficiency. The guide is not limited to instrument type or product type. 1.2 Warning—Not all instruments may correlate to all other instruments for various user specified products and size ranges. Instruments may measure different particle features, and they may also measure the same particle features differently and thus correlating the results of any two may be possible for some products but not possible for others. It is also the case that certain materials can be altered by the instruments measuring them which would eliminate them from consideration under this guide if the instrument’s results are determined based on measurements made after the instrument has altered the user specified product. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 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. 1.5 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 Guide for Correlation of Results of Solid Particle Size Measurement Instruments

ICS
19.120
CCS
发布
2020-10-01
实施

This document describes the specifications for spherical polydisperse particulate reference materials with acceptable uncertainty in particle size distribution and describes protocols for their characterization. One potential use of these reference materials is the reliability test of the laser- diffraction instruments and other particle sizing methods. This document expresses polydispersity and the related uncertainties in size. Small variations in size can imply large variations in cumulative distribution. This document describes the requirements of particulate reference materials, which are intended to be used to test the reliability of various types of particle size measurement apparatus. The requirements for processing, homogeneity and stability assessment as well as for the preparation of certificates, which are not addressed in this document are described in ISO 17034.

Preparation of particulate reference materials — Part 2: Polydisperse spherical particles

ICS
19.120
CCS
发布
2020-09-30
实施

What is ISO 13320  - Laser diffraction method about? ISO 13320 provides guidance on instrument qualification and size distribution measurement of particles in many two-phase systems (e.g., powders, sprays, aerosols, suspensions, emulsions, and gas bubbles in liquids) through the analysis of their light-scattering properties. ISO 13320 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). Who is ISO 13320 - Laser diffraction method f or? ISO 13320 on laser diffraction methods is relevant to: Testing authorities of microbiological and chemical test methods Physi...

Particle size analysis. Laser diffraction methods

ICS
19.120
CCS
发布
2020-07-31
实施
2020-07-31

1.1 This test method covers the sieve analysis of glass spheres used for retroreflective pavements markings and industrial uses. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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 Sieve Analysis of Glass Spheres

ICS
19.120
CCS
发布
2020-06-01
实施

1.1 This test method covers the determination of the particle size distribution of catalyst, catalyst carrier, and catalytic raw material particles and is one of several found valuable for the measurement of particle size. The range of average particle sizes investigated was from 1 to 300 µm equivalent spherical diameter. The technique is capable of measuring particles above and below this range. The angle and intensity of laser light scattered by the particles are selectively measured to permit calculation of a volume distribution using lightscattering techniques. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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 Catalytic Materials by Laser Light Scattering

ICS
19.120
CCS
发布
2020-05-15
实施

Good practice for dynamic light scattering (DLS) measurements

ICS
19.120
CCS
发布
2020-04-14
实施

光散射法细颗粒物(PM2.5)质量浓度测量仪是用于测量空气中PM2.5颗粒物质量浓度的仪器。 目前与PM2.5质量浓度测量仪相关的文献有 JJF1659-2017 PM2.5质量浓度测量仪校准规范、HJ 93-2013环境空气颗粒物(PM10和PM2.5)采样器技术要求及检测方法、HJ 653-2013环境空气颗粒物(PM10和PM2.5)连续自动监测系统要求及检测方法、HJ 618-2011环境空气PM10和PM2.5手工监测方法等技术法规、标准均未涉及光散射法原理仪器性能的测试方法。 本标准中包含了光散射法PM2.5质量浓度测量仪在生产和使用中的测试方法。

Powder Technology—Performance test method for fine particulate matter (PM2.5)mass concentration measurement instruments based on light scattering principle

ICS
19.120
CCS
M731
发布
2020-01-08
实施
2020-01-16

This document provides guidance on instrument qualification and size distribution measurement of particles in many two-phase systems (e.g. powders, sprays, aerosols, suspensions, emulsions and gas bubbles in liquids) 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).

Particle size analysis — Laser diffraction methods

ICS
19.120
CCS
发布
2020-01-06
实施
0000-00-00

Standard Guide for Dusting Attrition of Granular Activated Carbon

ICS
19.120
CCS
发布
2020-01-01
实施

1.1 This practice covers an apparatus and procedure for simulating the segregation tendencies of bulk solids by means of the sifting mechanism. 1.2 Temperatureand humidity-sensitive bulk solids may need to be tested at different temperatures and moisture contents, as would happen in an industrial environment. 1.3 The maximum particle size should be limited to 3 mm [1⁄8 in.], to reduce the likelihood of binding the slide gate. 1.4 This standard is not applicable to all bulk solids and segregation mechanisms: while sifting is a common segregation mechanism experienced by many bulk solids, other segregation mechanisms not evaluated by this standard might induce segregation in practice. Practice D6941 covers another common mechanism: fluidization. 1.5 The extent to which segregation will occur in an industrial situation is not only a function of the bulk solid and its tendency to segregate, but also the handling equipment (for example, bin design), process (for example, transfer rates), and environment. 1.6 Units—The values stated in either SI units or inchpound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.7 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026. 1.8 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process. 1.9 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. 1.10 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 Practice for Measuring Sifting Segregation Tendencies of Bulk Solids

ICS
19.120
CCS
发布
2020-01-01
实施

1.1 This document specifies the technical requirements for; the woven wire test sieve cloth (sieve cloth) used in test sieves, the construction of test sieves, standard and non-standard test sieve frame sizes, and test procedures used to inspect sieve cloth and the test sieves. This specification applies to test sieves manufactured with sieve cloth having a nominal aperture size ranging from 125 millimetres (mm) down to 20 micrometres (µm). 1.2 Additional reference information can be found in Specifications E161, E323, E2016, and in Test Methods C430 and E2427. 1.3 The values stated in SI units shall be considered standard for the dimensions of the sieve cloth openings and the wire diameters used in the sieve cloth. The values stated in inch-pound units shall be considered standard with regard to the sieve frames, pans, and covers. 1.4 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. 1.5 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 Specification for Wire Cloth and Sieves for Testing Purposes

ICS
19.120
CCS
/
发布
2020
实施
0000-00-00

What is ISO 21501-3- Light extinction liquid-borne particle counter about?   ISO 21501-3 is a safety standard on single-particle light interaction methods.   ISO 21501-3 describes a calibration and verification method for a light extinction liquid-borne   particle counter (LELPC) , which is used to measure the size and particle number concentration of particles suspended in the liquid. The light scattering method described in ISO 21501-3 is based on single-particle meas...

Determination of particle size distribution. Single particle light interaction methods - Light extinction liquid-borne particle counter

ICS
19.120
CCS
发布
2019-12-31
实施
2019-12-31

Light scattering automatic particle counter for liquid

ICS
19.120
CCS
发布
20191216
实施
20191216

What is ISO 21501-2- Light scattering liquid-borne particle counter about?   ISO 21501-2 is a safety standard on single-particle light interaction methods.   ISO 21501-2 describes a calibration and verification method for a light scattering liquid-borne   particle counter (LSLPC), which is used to measure the size and particle number concentration of particles suspended in the liquid. The light scattering method described in ISO 21501-2 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 si...

Determination of particle size distribution. Single particle light interaction methods - Light scattering liquid-borne particle counter

ICS
19.120
CCS
发布
2019-11-30
实施
2019-11-30

1   Scope This International Standard specifies methods for obtaining a test sample from a defined bulk of particulate material (powder, paste, suspension or dust) that can be considered to be representative of that bulk with a defined confidence level. It is particularly relevant to the measurement of particle size, size distribution and surface area.

Particulate materials. Sampling and sample splitting for the determination of particulate properties

ICS
19.120
CCS
发布
2019-11-30
实施
2019-11-30

Determination of particle size distribution by gravitational liquid sedimentation methods — Part 1: General principles and guidelines

ICS
19.120
CCS
发布
20191122
实施
20191122

Test sieves-Part 3:Test sieves of electroformed sheets

ICS
19.120
CCS
发布
20191122
实施
20191122

Test sieves-Part 2:Test sieves of perforated metal plate

ICS
19.120
CCS
发布
20191122
实施
20191122



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