This part of GB/T 24981 specifies the method for measuring the relative brightness of rare earth long-lasting phosphors. This section applies to the determination of the relative brightness of rare earth long-lasting phosphors.
GB/T 24981.2-2010 history
2020GB/T 24981.2-2020 Test methods of rare earth long afterglow phosphors—Part 2: Determination of afterglow brightness
2010GB/T 24981.2-2010 Test methods of long afterglow phosphors activated by rare earths.Part 2:Determination of relative brightness