Osram HQI-TS Excellance blue

Here you can see wich is believed to be the last colored metal halide lamps osram offered in it's catalogues. It has the modern powerstar excellence design featuring a quart outer bulb that is sealed around the the discharge tube making it a very compact lamp. Osram Stoped making tradional double ended quartz MH lamps after introducing their novel design. This lead to this lamp also having that design even thue beeing a blue MH lamp designed to light salt water aquariums.