DIN EN ISO 16993:2016-11

This document gives formulae which allow analytical data relating to solid biofuels to be expressed on the different bases in common use. Consideration is given to corrections that can be applied to certain determined values for solid biofuels prior to their calculation to other bases. In informative Annex A, tools for integrity checks of analytical results are given. In informative Annex B, conversion factors for calculation into other units are given. Informative Annex C is a guideline for the use of validation parameters as can be found in ISO/TC 238 analytical standards. In the standards of the ISO covering the analysis of solid biofuels, it is generally specified that the determination is intended to be carried out on the air-dried or in air-equilibrated general analysis test sample prepared according to ISO 14780. However, in making use of these analyses, it is necessary to express the results on dry basis and sometimes, also on some other basis. The bases in common use for solid biofuels are "air-dried" (sometimes stated as "as determined"), "as received" (sometimes stated "as sampled" or "as delivered"), "dry", and "dry, ash free". This document has been prepared by Technical Committee ISO/TC 238 "Solid biofuels" in collaboration with Technical Committee CEN/TC 335 "Solid biofuels", the secretariat of which is held by SIS. This document replaces DIN EN ISO 16993:2015-07. The responsible German committee is Working Committee NA 062-05-82 AA "Biogene Festbrennstoffe" ("Solid biofuels") at DIN Standards Committee Materials Testing (NMP).