Historical
ISO 1043-4:1998
Plastics - Symbols and abbreviated terms - Part 4: Flame retardants
This part of ISO 1043 provides uniform symbols for flame retardants added to plastics materials. The symbols are written with the abbreviated term "FR" and one or more succeeding code numbers as given in clause 5. They are used in addition to the symbols for the plastics materials, for plastics material designation and for identification and marking of plastics products.
International Organization for Standardization [iso]