Department of Trade and Industry (DTI) and Department of Energy (DOE) Joint Circular No. 09-02 - Implementing Guidelines for the Performance and Energy Labeling Requirements on Double-Capped Fluorescent Lamps - Performance Specifications covered by (1) PNS IEC 60081:2006 Amd. 02 & 03:2006, Double-capped fluorescent lamps - Performance specification and (2) PNS 2050-1-1:2007, Lamps and related equipments - Energy effieciency and labeling requirements - Part 1-1: Double-capped fluorescent lamps