GB/T 42351.2-2024 Active National standards

GB/T 42351.2-2024 Preparation of particulate reference materials—Part 2:Polydisperse spherical particles

Publish Date: 2024-09-29 Implement Date: 2025-04-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 42351.2-2024

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Screening, sieve plates, and sieve nets

ICS Name: Granularity analysis and sieving

Publish Date: 2024-09-29

Implement Date: 2025-04-01

Pages: 24 pages

Scope

This document describes the methods for preparing standard samples of spherical polydisperse particles with acceptable uncertainty in their size distribution and characterizing their size distribution. The potential uses of the standard samples include reliability testing of laser diffraction and other related size analysis methods.
This document presents the evaluation of the polydispersity of particle size and associated uncertainties. Small changes in particle size can lead to significant variations in the cumulative distribution.
This document outlines the necessary characteristics of particle standard samples, which are designed for reliability testing of various types of particle size measurement equipment. This document does not address the requirements for processing, uniformity, stability assessment, and certificate production described in ISO 17034.