how to tell if an hps bulg is new?

[Dutch Pimp]

what brand?...most lamps are pre-burned

http://boards.cannabis.com/indoor-li...b-failure.html

Dutch Pimp Reviewed by Dutch Pimp on 06-16-2011. how to tell if an hps bulg is new? I bought an supposedly brand new hps on e bay. My plants arent growing. While supposedly brand new, the bulb has some blackening on select areas. Please confirm. Rating: 5