GB/T 24980-2020 Rare earth long afterglow phosphors

Scope: This standard stipulates the technical requirements, test methods, inspection rules and signs, packaging, transportation, storage and quality certificates of rare earth long-lasting phosphors. This standard applies to rare earth long-lasting phosphors of aluminate system, silicate system and sulfur oxide system prepared by high-temperature solid-state reaction, and is mainly used for emergency signs, escape signs, plastics, inks, and ceramics in the field of fire protection. Low-light instructions in the industry, instructions and low-light lighting in dark vision environments such as outdoors and roads.

GB/T 15676 rare earth term
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

GB/T 24980-2020Rare earth long afterglow phosphors