Joe : I used lamps from Duro-Test with a CRI (color rendition index ) of 94. You should look for lamps as close to CRI 100 as possible (CRI 100= sunlight). It should also be noted that lamps lose lumins through use so don't wait for them to burn out, they should be replaced yearly , working or not. Also I was advised not to use diffusers (grills ) of any kind.
Hope this helps.
Michael DiPaulo, CDT/TE is on LMTmag!
The online social blog and network from LMT Communications dedicated exclusively for members of the Dental Laboratory industry. Join free to connect with Michael.