Originally Posted by David H. Bebbington
As the bulb is a tungsten halogen type, its color temperature should not change much if at all during its service life.
What is worth knowing is that the styrofoam mixing chambers used in Meopta enlargers yellow with age and need changing (probably every 5 years or so wth occasional use, more often with heavy use).
Thanks for that info David. Thats interesting to know.