1 ScopeThis part of ISO 1043 specifies uniform symbols for terms refering to filers 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 filer or reinforcing material and to prevent a given symbol being interpreted in more than one way.NOTEFor symbols and abbreviated terms for basic polymers and ther special characterisis,seeISO 1043-1,for plasticizers see ISO 1043-3,and, forflame retardants,see ISO 1043-4.