Insectocutor Lamps - Filtered Blue Bulb works to filter out blue visible light, while maximizing light output for eliminating flying insects. Insectocutor Lamps - Filtered Blue Bulb features special filtering glass, which reduces the passage of energy in the visible light range between 4000 and 4600 Angstroms. This allow for light emanating from the Filtered Blue Bulb to appear as a blue/black color.
Application: filtered bulb.
Use on: use with insect light traps.