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BS ISO 13319-1:2021

BS ISO 13319-1:2021

$167.15

Determination of particle size distribution. Electrical sensing zone method – Aperture/orifice tube method

Published By Publication Date Number of Pages
BSI 2021 42
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This document specifies the measurement of the size distribution of particles dispersed in an electrolyte solution using the electrical sensing zone method. This can include biologics such as cells, but also industrial particles such as carbon, cement, ceramic powders, metal powders, pigments and polymer powders. The method measures pulse heights and their relationship to particle volumes or diameters, and is applicable over the range (implementation dependant) from approximately 0,5 ?m t? above 1 mm. This document does not address the specific requirements of the measurement of specific materials.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 Foreword
8 1 Scope
2 Normative references
3 Terms and definitions
9 4 Symbols
10 5 Principle
11 6 General operation
6.1 Response
12 6.2 Size limits
6.3 Effect of coincident particle passage
13 6.4 Dead time
14 6.5 Analysis volume
7 Repeatability and reproducibility of counts
7.1 Instrument repeatability
15 7.2 Method reproducibility/intermediate precision
8 Operational procedures
8.1 General
8.2 Instrument location
8.3 Linearity of the aperture/amplifier system
8.4 Linearity of the counting system
8.5 Choice of electrolyte solution
8.5.1 General
16 8.5.2 Special considerations for small apertures (D < 50 µm)
8.5.3 Special considerations for large apertures (D > 400 µm)
8.6 Preparation of electrolyte solution
8.7 Recommended sampling, sample splitting, sample preparation and dispersion
8.7.1 General
17 8.7.2 Method 1: Using a paste
8.7.3 Method 2: Alternative method applicable to low-density particles of less than 50 µm
18 8.7.4 Suspensions and emulsions
8.7.5 ​Verification of the dispersion
8.8 Choice of aperture(s) and analysis volume(s)
8.9 Clearing an aperture blockage
19 8.10 Stability of dispersion
8.11 Calibration
8.11.1 General
20 8.11.2 Calibration procedure — microsphere calibration
9 Analysis
10 Calculation of results
21 11 Instrument qualification
11.1 General
11.2 Report
22 Annex A (informative) Derivation of maximum count number to limit coincidence
24 Annex B (informative) Fishbone diagram for method development
26 Annex C (informative) Calibration and control of frequently used apertures
27 Annex D (informative) Mass integration method for calibration and mass balance
33 Annex E (informative) Calibration for the measurement of porous and conductive particles
36 Annex F (informative) Technique using two (or more) apertures
38 Annex G (informative) Chi-squared test of the correctness of instrument operation or sample preparation
40 Bibliography

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BS ISO 13319-1:2021
$167.15