>Metrolux II
The Metrolux II is a great light integrator! Although it is sensitive
to all light bands. For about $300.00 (yikes!) you can buy a 3 inch glass
filter to cut out all light rays other than UV and adapt it over the light
probe. This works very well although I have been using mine for both
sunlight and in my light box for over a year and find it to be 100%
consistent without the filter.
DMK