Department of Trade and Industry (DTI) and Department of Energy (DOE) Joint Circulr 09-03 - Implementing Guidelines for the Performance and Energy Labeling Requirements on Single-Capped Fluorescent Lamps covered by (1) PNS IEC 60901:2001 Amd. 01, 02 & 03:2006, Single-capped fluorescent lamps - Performance specifications and (2) PNS 2050-1-2:2006, Lamps and related equipments - Energy labeling requirements - Part 1-2: Single-capped fluorescent lamps