ISO 22145:2021 pdf download – Fertilizers and soil conditioners — Mineral soil amendments — Determination of total calcium and magnesium content.
1 Scope This document establishes an overview of the relevant methods for the determination of calcium and magnesium as defined in ISO 8157. This document is applicable to any mineral soil amendment, neutral, basic or acid containing calcium and/or magnesium. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 8157, Fertilizers and soil conditioners — Vocabulary 3? Terms? and? definitions For the purposes of this document, the terms and definitions given in ISO 8157 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https:// www .iso .org/ obp — IEC Electropedia: available at http:// www .electropedia .org/ 4 List of existing and relevant methods The following methods listed in Table 1 have been considered in their scope. All these methods are considered relevant and suitable for the purpose of the determination of total calcium and/or magnesium content in mineral soil amendments defined in ISO 8157.