BS ISO 22146:2018,Carbonate liming materials — Determination of reactivity — Automatic titration method with citric acid.
BS ISO 22146:2018 specifies a method for determining the reactivity of calcium carbonate and calcium magnesium carbonate liming materials.
This document has been prepared to improve the existing agricultural reactivity methods for carbonate liming materials: duration, accuracy,representativeness, closer from soil conditions, automation.
2 Normative references
ISO 3696, Water for analytical laboratory use – Specification and test methods.
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.
ISO 20978, Liming materials- Determination of neutralizing value – Titrimetric methods.
EN 12048, Solid fertilizers and liming materials -Determination of moisture content- Gravimetricmethod by drying.
BS ISO 22146:2018 pdf comes from a net friend called Judy from Australia.Thanks.

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