DIN EN ISO 17828:2016-05

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 (Sweden). This document defines a method of determining bulk density of solid biofuels by the use of a standard measuring container. This method is applicable to all pourable solid biofuels with a nominal top size of maximum 100 mm. Bulk density is not an absolute value; therefore, conditions for its determination have to be standardized in order to gain comparative measuring results. The nominal top size is defined as the aperture size of the sieve where at least 95 % by mass of the material passes (see ISO 16559). Bulk density of solid biofuels is subject to variation due to several factors such as vibration, shock, pressure, biodegradation, drying, and wetting. Measured bulk density can therefore deviate from actual conditions during transportation, storage, or transhipment. The responsible German body is Working Committee NA 062-05-82 AA "Biogenic Festbrennstoffe" ("Solid biofuels") at DIN Standards Committee Materials Testing (NMP).