![]() Ultraviolet energy is measured and defined by light within a band between 40 Angstroms (400 and 100 nanometers). Some types of light energy classifications include: Infra Red, Visible (sunlight), and Ultraviolet (UV). By determining wavelength measurements, classification of different light types within the full light spectrum is possible. Insect attraction lamps, like all lamps, emit energy in the form of light. Note: as we are now without the standard glass fluorescent lamp #24B, the safety-coated glass version lamp #24SB is also discontinued in 2019. ![]() That said, the lamp #24 is an acceptable alternative for new and old Insect-O-Cutor equipment. Unfortunately, the global volume demanded for the lamp #24B diameter/size does not justify current or future production. It is our understanding there are only two factories left on the planet that make that lamp's glass type (BLB filtered glass). Please know the ultraviolet black light blue (BLB) insect attraction lamp #24B has been discontinued. However, the BLB lamp is constructed of special filtering glass which reduces the passage of energy in the visible light range between 40 Angstroms (400 to 460 nanometers).īecause of this filtering of blue visible light, the lamp does not have the light blue color that the BL lamp tube does but instead appears as a blue/black color. The BLB lamp produces its energy in the same wavelength range that the BL lamp does. The lesser portion of the energy emitted by the BL lamp is in the Blue Visible range. Note in the graph below that visible light ranges from Violet to Red. However, a portion of the energy is outside the UV range as the light spectrum enters the Visible Light range. The BL lamp produces most of its energy in the Near UV range. To maintain insect attracting effectiveness in light traps, it is important to replace the lamps at least annually.īlack Light (BL) and Black Light Blue (BLB) Lamp Combination Most black light fluorescent lamps have an average lifespan of 7000 hours (9.5 months of continuous use). Maximizing the emission of near ultraviolet (near-UV) light is key to the overall effectiveness of any electrical flying insect elimination system.
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