GB/T 5758-2023
Determination method of particle size, effective particle size and uniformity coefficient of ion exchange resin (English Version)
- Standard No.
- GB/T 5758-2023
- Language
- Chinese, Available in English version
- Release Date
- 2023
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/T 5758-2023
- Replace
- GB/T 5758-2001
- Scope
- This document describes the method for determining the particle size range, upper particle size limit, lower particle size limit, effective particle size, average particle size and uniformity coefficient of ion exchange resins.
- Introduction
Interpretation of GB/T 5758-2023, the National Standard of the People's Republic of China
Overview of the Standard
GB/T 5758-2023 mainly specifies the determination methods of particle size, effective particle size and uniformity coefficient of ion exchange resins, and is applicable to spherical and powdered ion exchange resins. Compared with the 2001 version, the new standard adds the definition and test method of average particle size, and introduces laser diffraction method as a supplement.
Technical Background Analysis
Background of Standard Formulation
Ion exchange resins are widely used in water treatment, chemical industry and other fields, and their performance is closely related to particle size distribution. Accurate determination of particle size parameters is crucial to ensure product quality and application effect.
Technical Evolution Analysis
- New Content:Definition and test method of average particle size.
- Method optimization: Improvements to wet sieving and dry sieving methods, and the addition of laser diffraction.
- Application scope expansion: Supports a wider particle size range (0.1 μm to 3000 μm).
Comparison of Determination Methods
Determination Method Scope of Application Instrument Requirements Advantages Wet Sieving Method Spherical Resin with Wet True Density > 1 g/mL Standard Test Sieve, Separating Funnel, etc. Intuitive operation, reliable results Dry Sieving Method Spherical Resin with Wet True Density ≤ 1 g/mL Standard Test Sieve, etc. Suitable for Low-Density Samples Laser diffraction method Powdered or granular resins from 0.1 μm to 3000 μm Laser particle size analyzer High precision, non-contact measurement Implementation suggestions
Precautions in practical application
- Sample pretreatment:Ensure that the sample state meets the test requirements, especially weak acidic and weak alkaline resins need to be fully washed.
- Instrument calibration:Regularly calibrate the test sieve and laser particle size analyzer to ensure measurement accuracy.
- Data processing:It is recommended to use professional software for data analysis to ensure the accuracy and consistency of the results.
GB/T 5758-2023 Referenced Document
- GB/T 19077-2016 Particle size analysis.Laser diffraction methods
- GB/T 5475 Methods of sampling ion exchange resins
- GB/T 5476 Methods of pretreating ion exchange resins
- GB/T 6003.1 Test sieves—Technical requirements and testing—Part 1:Test sieves of metal wire cloth
- GB/T 6003.2 Test sieves - Technical requirements and inspection - Part 2: Metal perforated plate test sieves*， 2024-09-29 Update
- GB/T 6682 Water for analytical laboratory use.Specification and test methods
- GB/T 8330 Determination of specific gravity of ion exchange resins in wet state
GB/T 5758-2023 history
- 2023 GB/T 5758-2023 Determination method of particle size, effective particle size and uniformity coefficient of ion exchange resin
- 2001 GB/T 5758-2001 Determination for particle size range,effective size and uniformity coefficient of ion exchange resins