19.120 粒度分析、筛分 标准查询与下载



共找到 706 条与 粒度分析、筛分 相关的标准,共 48

1.1 This specification covers perforated plate with either round or square apertures, normally mounted in a frame for use as sieves in precision testing in the classification of materials according to designated nominal particle size. A method for checking the accuracy of perforated sieve plates is included as information in Appendix X1. NOTE 1—The perforated-plate sieves covered by this specification are intended for general precision testing. Some industries may require more restricted specifications for sieves for special testing purposes. NOTE 2—For other types of sieves see Specifications E11 and E161. NOTE 3—Complete instructions and procedures on the use of test sieves are contained in ASTM STP 447, Manual on Test Sieving Methods. This manual also contains a list of all ASTM published standards on sieve analysis procedures for specific materials or industries. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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 Specification for Perforated-Plate Sieves for Testing Purposes

ICS
19.120
CCS
发布
2021-09-01
实施

BS ISO 13317-1. Determination of particle size distribution by gravitational liquid sedimentation methods - Part 1. General principles and guidelines

ICS
19.120
CCS
发布
2021-08-10
实施
2021-08-10

This document specifies an in situ method for the determination of the density of solid particles or liquid droplets (herein referred to as "particle") dispersed in liquid continuous phase. The method is based on direct experimental determination of particle velocity in these liquids or media in gravitational or centrifugal fields based on Stokes law. The particle density is calculated from experimentally determined particle velocities in different liquids or media, taking into account their dynamic viscosities and densities, respectively. The approach does not require the knowledge of particle size distribution but assumes that sedimentation relevant characteristics (e.g. volume, shape, agglomeration state) do not change. This document does not consider polydispersity with regard to particle density, i.e. all particles are assumed to be of the same material composition.

Determination of particle density by sedimentation methods — Part 2: Multi-velocity approach

ICS
19.120
CCS
发布
2021-07-01
实施

1.1 This guide presents a procedure for evaluating the resistance to dusting attrition of granular activated carbons. For the purpose of this guide, the dust attrition coefficient, DA, is defined as the weight (or calculated volume) of dust per unit time, collected on a preweighed filter, in a given vibrating device during a designated time per unit weight of carbon. The initial dust content of the sample may also be determined. Granular activated carbon is defined as a minimum of 90 % being larger than 80 mesh (0.18 mm) (see Test Methods D2867). 1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units 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 Guide for Dusting Attrition of Granular Activated Carbon

ICS
19.120
CCS
发布
2021-06-01
实施

1.1?This test method covers the sieve analysis of common raw materials for glass manufacture, such as sand, soda-ash, limestone, alkali-alumina silicates, and other granular materials used in glass batch. 1.2?The values stated in SI units are to be regarded as standard. The val

Standard Test Method for Sieve Analysis of Raw Materials for Glass Manufacture

ICS
19.120
CCS
发布
2021-06-01
实施

This document applies to rectangular plates with regularly plates with regularly distributed round, square or oblong holes in staggered, diagonally staggered or straight lines, see figure 1 to 10, independent of the type of material used. The tolerances for machining and processi

Perforated plates - Dimensions

ICS
19.120
CCS
发布
2021-06-00
实施

Industrial Woven Wire Cloths

ICS
19.120
CCS
发布
20210524
实施
20210524

1.1 This test method covers an apparatus and procedures for measuring properties of bulk solids, henceforth referred to as Carr Indices.2 1.2 This test method is suitable for free flowing and moderately cohesive powders and granular materials up to 2.0 mm [1⁄16 in.] in size. Materials must be able to pour through a 6.0 to 8.0-mm [1⁄4 to 5⁄16 in.] diameter funnel outlet when in an aerated state. 1.3 This method consists of eight measurements and two calculations for Carr Indices as follows. Each measurement, or calculation, or combination of them, can be used to characterize the properties of bulk solids. 1.3.1 Measurement of Carr Angle of Repose 1.3.2 Measurement of Carr Angle of Fall 1.3.3 Calculation of Carr Angle of Difference 1.3.4 Measurement of Carr Loose Bulk Density 1.3.5 Measurement of Carr Packed Bulk Density 1.3.6 Calculation of Carr Compressibility 1.3.7 Measurement of Carr Cohesion 1.3.8 Measurement of Carr Uniformity 1.3.9 Measurement of Carr Angle of Spatula 1.3.10 Measurement of Carr Dispersibility 1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026. 1.4.1 The procedures used to specify how data are collected/ recorded or calculated in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives: and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design. 1.5 Units—The values stated in either SI units or inchpound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.6 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. 1.7 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 Bulk Solids Characterization by Carr Indices

ICS
19.120
CCS
发布
2021-05-01
实施

Determination of particle size distribution – Electrical sensing zone method – Part 1: Aperture/orifice tube method

ICS
19.120
CCS
发布
2021-03-22
实施
2021-03-22

维生素C粉在试验筛上,随着筛子的震动而不断运动,细小的粉料不断通过筛网,而大颗粒不能通过筛网,从而实现大颗粒与小颗粒的分离,达到筛分通过率检测的目的。筛分一定时间后,称取筛上物的质量,与筛分前的差值除以筛分前总质量,可获得此次通过率。正常维生素C粉的筛分通过率会随着重复次数的增加或者筛分时间的延长而逐渐趋于稳定。

Test method for screening rate of vitamin C powder

ICS
19.120
CCS
C146
发布
2021-02-06
实施
2021-02-22

Welded steel wire and bar fabrics

ICS
19.120
CCS
发布
2021-01-26
实施

What is ISO 15900 - Electrical mobility analysis for aerosol particles about?   ISO 15900 provides guidelines and requirements for the determination of aerosol particle number size distribution by means of the analysis of electrical mobility of aerosol particles. This measurement is usually called “differential electrical mobility analysis for aerosol particles”. ISO 15900 is applicable to particle size measurements ranging from 1 nm to 1 μm. ISO 15900 includes the calculation method of uncertainty. In ISO 15900, the complete system for carrying out differential electrical mobility analysis is referred to as DMAS (differential mobility analyzing system), while the element within this system that classifies the particles according to their electrical mobility is referred to as DEMC (differential electrical mobility classifier).

Determination of particle size distribution. Differential electrical mobility analysis for aerosol particles

ICS
19.120
CCS
发布
2020-10-31
实施
2020-10-31

1   Scope 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 - Polydisperse spherical particles

ICS
19.120
CCS
发布
2020-10-31
实施
2020-10-31

1   Scope 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
2020-10-31
实施
2020-10-31

Determination of particle size distribution – Differential electrical mobility analysis for aerosol particles

ICS
19.120
CCS
发布
2020-10-27
实施
2020-10-27

This document provides guidelines and requirements for the determination of aerosol particle number size distribution by means of the analysis of electrical mobility of aerosol particles. This measurement is usually called “differential electrical mobility analysis for aerosol particles”. This analytical method is applicable to particle size measurements ranging from approximately 1 nm to 1 µm. This document does not address the specific instrument design or the specific requirements of particle size distribution measurements for different applications but includes the calculation method of uncertainty. In this document, the complete system for carrying out differential electrical mobility analysis is referred to as DMAS (differential mobility analysing system), while the element within this system that classifies the particles according to their electrical mobility is referred to as DEMC (differential electrical mobility classifier). NOTE This document does not include technical requirements and specifications for the application of DMAS, which are defined in application specific standards or guidelines, e.g. for road vehicle applications (ISO/TC 22), environmental measurements (ISO/TC 146) or nanotechnologies (ISO/TC 229).

Determination of particle size distribution — Differential electrical mobility analysis for aerosol particles

ICS
19.120
CCS
发布
2020-10-20
实施
0000-00-00

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 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

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

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



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