Philips MASTER PL-R Eco Compact Fluorescent Lamp for downlight applications. It consists of six parallel tubes with a new innovative ‘twist and lock’ lamp base, designed for operation with electronic gear. The MASTER PL-R Eco contains the original bridge technology invented and patented by Philips. This guarantees optimum performance in the application and results in significantly higher efficiencies than with regular compact fluorescent lamps. On top of that, MASTER PL-R Eco lamps are more than double the service life of a standard compact fluorescent lamp, thanks to superior lumen maintenance. The ‘twist and lock’ lamp base provides easy and safe (dis-)mounting and sturdy fixation in the luminaire. Up to 50% less energy consumption in application versus 18 and 26 W PL-C/T on electromagnetic ballasts for comparable lighting levels. Up to 25% less energy consumption in application versus 18 and 26 W PL-C/T on electronic drivers for comparable lighting levels. Easy lamp (re-)placement and stable fixation due to new twist and lock lamp base / holder. Longer lifetime and less early failures lead to less hassle and lower maintenance costs and facilitate the change from spot to group replacement. Dimming possible down to 10%. Designed for general down-lighting in (semi-) professional indoor applications: offices, retail, hospitals, governmental and public buildings. Ideal for use in recessed or surface mounted downlighters, wall units. Suitable for use in applications where maintenance costs are high department stores, supermarkets, warehouses, production halls and public areas. Lamp light technical and electrical characteristics are influenced by operating conditions, I. e. lamp ambient temperature and operating position as well as applied HF control gear. Shorter lamp life when often switching and not well pre-heated electrodes.