Rechercher

ISO 7218:2007 gives general requirements and guidance/options intended for three main uses: implementation of ISO TC34/SC9 or TC34/SC5 standards for detection or enumeration of microorganisms;good laboratory practices for food microbiological laboratories (the purpose is not to detail them in this International Standard, manuals are available for that purpose);guidance for accreditation of food…

This International Standard specifies an infrared absorption method, after combustion in an induction furnace, for the determination of the total carbon and sulfur content in steel and iron. The method is applicable to carbon contents of mass fraction between 0,005 % and 4,3 % and to sulfur contents of mass fraction between 0,000 5 % and 0,33 %. This method is intended to be used in normal…