really good light! .... but not for long!

With this lamp you get for the money a very tidy workplace lighting, light, and with the daylight lamps used good color rendering. The ballast used to start fast and without flickering. So all in all two thumbs up!

Edit 19/09/2014

We have in the company more of these lamps in use and should be placed into an operating period of about 2 years, sometimes significantly less, find that individual lamps fail from time to time. The reason for this is a miserable production quality ballasts used. There is obviously cold junction, because knocking can the tubes temporarily put back into operation.
Even the Kuststoff the reflector rapidly yellows.

So today would be a bad buy because the quality of lamps is unacceptable. Considering the inner life also clear whose origin is the parts are probably and in turn any further question is then superfluous .....