he Osram Dulux D can be used in combination with a conventional ballast. The lamp has a short and compact lamp base type. This means that each of these compact fluorescent lamps has a base with 4 pins. The lamps Osram has a length of 138 mm. Osram has an energy rating label of B and an average lifespan of 10,000 hours. If the lamp starts flashing and has a delayed start-up time then it needs replacing.The Osram can be used in many different places. The produces a light that is pleasant on the eyes. It is not too warm or intense and so it more suited for office environments.