Relamping
GTI Graphiclite D50 and CMlite D65 fluorescent lamps are custom made to rigid specifications for optimum standards compliance and re-creation of CIE illuminants. The precise spectral characteristics and lumen output are subject to an exhaustive quality control process to assure that each lamp provides true full-spectrum, color balanced illumination and extremely accurate color rendition.
Graphic imaging applications (ISO 3664) specify the use of D50 daylight while color and appearance applications (ASTM 1729) specify the use of D65 daylight.
When ordering lamps, you will need to know the model number of the lamp and the quantity needed. Occasionally you may need to confirm the batch number. This information can be found printed on your current lamps.
Note: GTI Color Viewing Lamps are shipped in standard package sizes of 6 and 30 for T12 lamps, or 8 and 30 for T8 lamps (24 for 60" T8 lamps). The price per lamp is slightly higher when you order lamp kits that have less than the standard lamp quantity.