600w HPS HID factory/warehouse/forecourt/growlight bulb

All HID bulbs are very fragile in more ways than one.ALL hydroponic shops and other HID bulb suppliers offer NO refunds on these type of bulb.For the following reasons:
1.Just as little as a finger print on the surface of the glass combined with the high temperature the bulb gives off can cause the bulb to crack this can take hours or months to happen.This is not to mention all other liquids even just water on the glass jackets surface will cause this.
2.If the bulb is not screwed in tightly enough this can cause an electical"ark" to occur at the the base of the bulb which can either burn the bulb out completely or over various time scales reduce the life expectacy of the bulb.
3.If a bulb is used with the wrong sized or type of gear box "ballast" or used in very hot non-ventilated conditions this will cause similar problems.
4.When the bulbs are manufactured they are designed with vacuum conditions inside the glass jacket if the bulb receives a sudden contact this can cause a minute crack to appear inside the metal screw cap area at the base,which will let just enough pressure in to neutralise the vacuum and render the bulb useless.On HPS bulbs this is evident when the metallic colour inside the glass jacket beneath the brand stamp turns white.
5.Continous none stop use for as little as a week or so,can cause poor life expectancy.
There are so many different factors involved its hard to deterime who is at fault,hence: RETURNS WILL ONLY BE EXCEPTED AND HAPPILY EXCHANGED,FOR A MAXIMUM OF 7 DAYS AFTER RECEIPT OF YOUR ORDER.
Please handle carefully!