ISO 20977:2018
Liming materials — Determination of size distribution by dry and wet sieving
This document specifies two methods for the determination of the particle size distribution of liming materials.
Method A (the dry sieving method) is applicable to all liming materials except wet and paste-like products. Method A is not applicable if blinding, caking, electrostatic charges or agglomeration occur after drying.
Method B (the wet sieving method) is applicable to products which are susceptible to blinding, caking, electrostatic charges or agglomeration after drying. Method B can be used to determine the primary particle size distribution of granulated products. Method B is not applicable to burnt lime and liming materials containing water-soluble constituents.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
4.1 Suitable methods
4.2 Method A (dry sieving)
4.3 Method B (wet sieving)
5 Apparatus
6 Sampling
7 Procedure
7.1 Test portion
7.2 Method A (dry sieving)
7.2.1 Preparation of test portions
7.2.2 Determination
7.3 Method B (wet sieving)
7.3.1 General
7.3.2 Determination
8 Expression of results
8.1 Method A
8.2 Method B
9 Precision
9.1 General
9.2 Repeatability
9.3 Reproducibility
10 Test report
Annex A (informative) Results of an interlaboratory trial to determine the size distribution by dry and wet sieving
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
4.1 Suitable methods
4.2 Method A (dry sieving)
4.3 Method B (wet sieving)
5 Apparatus
6 Sampling
7 Procedure
7.1 Test portion
7.2 Method A (dry sieving)
7.2.1 Preparation of test portions
7.2.2 Determination
7.3 Method B (wet sieving)
7.3.1 General
7.3.2 Determination
8 Expression of results
8.1 Method A
8.2 Method B
9 Precision
9.1 General
9.2 Repeatability
9.3 Reproducibility
10 Test report
Annex A (informative) Results of an interlaboratory trial to determine the size distribution by dry and wet sieving
Bibliography