donsbulbs.com
Don's bulbs
rare light bulbs and lamps
glossary of termsinformation
definition of: BLACK LIGHT BLUE

What is BLACK LIGHT BLUE?

BLACK LIGHT BLUE refers to /BLB.

black-light blue. Narrow filtered UV output fluorescent "black-light blue" bulbs which are BLACK (dark purple) color when OFF.

Wide spectrum (unfiltered) UV output fluorescent bulbs are designated /BL "black-light" and are WHITE color when OFF.

references for this page: /BLB, BLACK-LIGHT BLUE, BLACK LIGHT BLUE

reference to this page: /BL