ISO 22146:2018 PDF

Scope: This document specifies a method for determining the reactivity of calcium carbonate and calcium magnesium carbonate liming materials. It assesses the speed and effectiveness of their neutralising potential by automatic titration with citric acid. This method is applicable only to liming materials with a maximum particle size of 6,3 mm determined in accordance with ISO 20977. NOTE For marble dolomite (BET procedure as defined in ISO 9277 below 500 m2/kg), see EN 14984.

ISO 22146:2018 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 14820-2 Fertilizers and liming materials - Sampling and sample preparation - Part 2: Sample preparation
ISO 20977 Liming materials — Determination of size distribution by dry and wet sieving*， 2018-12-07 Update
ISO 20978 Liming material — Determination of neutralizing value — Titrimetric methods*， 2020-05-15 Update
ISO 3696 Water for analytical laboratory use; Specification and test methods

2018 ISO 22146:2018 Carbonate liming materials — Determination of reactivity — Automatic titration method with citric acid