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Bio-based products. Determination of the oxygen content using an elemental analyser Ingestion-build-260237 This standard refers only to1 Scope This document specifies a direct method for the determination of the total oxygen content in bio based products using an elemental analyser. The scope is limited to products containing elements carbon, hydrogen, oxygen, nitrogen, chloride, bromide and iodide without fluoride, representing at least 95 % of the composition of the product to be analysed. NOTE 1 Bio based materials can contain both organic and inorganic components. The oxygen