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ISO 1043-2:2011
Plastics - Symbols and abbreviated terms - Part 2: Fillers and reinforcing materials
ISO 1043-2:2011 specifies uniform symbols for terms referring to fillers and reinforcing materials. It includes only those symbols that have come into established use, and its main aim is both to prevent the occurrence of more than one symbol for a given filler or reinforcing material and to prevent a given symbol being interpreted in more than one way.
International Organization for Standardization [iso]