1.1 This standard (Part XXIV) lays down the methods for the determina-tion of exchangeable metallic cation and exchangeable hydrogen ion, sum of which will be the cation exchange capacity of soils.
1.1.1 It also lays down a single method which determines the cation exchange capacity (metallic and hydrogen ions together).
IS 2720 Pt.24-1976 history
1976IS 2720 Pt.24-1976 Soil Test Methods Part XXIV Determination of Cation Exchange Capacity