ISO 20977:2018 PDF

Scope: 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.

ISO 20977:2018 Referenced Document

EN 12048 Solid fertilizers and liming materials - Determination of moisture content - Gravimetric method by drying at (105 ± 2) °C (ISO 8190:1992, modified)
ISO 14820-1 Fertilizers and liming materials - Sampling and sample preparation - Part 1: Sampling
ISO 3310-1 Test sieves - Technical requirements and testing - Part 1: Test sieves of metal wire cloth
ISO 565 Test sieves; metal wire cloth, perforated metal plate and electroformed sheet; nominal sizes of openings
ISO 8397:1988 Solid fertilizers and soil conditioners; test sieving

2018 ISO 20977:2018 Liming materials — Determination of size distribution by dry and wet sieving