Text as adopted by the Working Party on Lighting and Light Signalling (GRE) at its 68th session to introduce a new category of amber dual-filament light sources PY21/5W, clarify color-measurement requirements, and correct the omission of the letter “q” from the cap designation of category PR27/7W.
GRE/2012/34 | |
GRE/2012/35 | |
GRE-68-07 |