This provides an alternate source for the UV monochromator head. There is also a UV source which is a Mercury lamp powered unit.
I now have all three of the optical units, several of the Tungsten lamps, and this lamp unit. Now to find out if it will work with any of my power supplies. I do have a source with P/S which has both a mercury lamp and a deuterium lamp, but it is not B & L. Also it does not have a power supply for the mercury lamp.
The apples were tasty too.