DIN Standards Committee Pigments and Extenders
ISO 3262-21
Extenders - Specifications and methods of test - Part 21: Silica sand (unground natural quartz)
Füllstoffe - Anforderungen und Prüfverfahren - Teil 21: Quarzsand (ungemahlener natürlicher Quarz)
Responsible national committee
NA 078-00-07 AA - Pigments and extenders in coatings, plastics, paper and printing ink
Responsible international committee
ISO/TC 256/WG 8 - Colorants and extenders for coating materials, plastics, paper and printing inks