<![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 7990:1985]]> /cms/render/live/en/sites/isoorg/contents/data/standard/01/49/14987.html Ïã¸ÛÁùºÏ²Ê¿ª½± standards and projects Ïã¸ÛÁùºÏ²Ê¿ª½±.org 60 /modules/isoorg-template/img/iso/favicon/red/favicon1.ico http://www.iso.org/ <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 7990:1985]]> <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 7990:1985 - Manganese ores and concentrates — Determination of total iron content — Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method]]> /cms/render/live/en/sites/isoorg/contents/data/standard/01/49/14987.html /cms/render/live/en/sites/isoorg/contents/data/standard/01/49/14987.html 2022-03-25