The LS-4 still proves to be the most popular in the Raytech Compact Ultraviolet line. This low cost lamp is easy to use and can be used anywhere where there is a power source.
A sliding wavelength selector allows you to either use either longwave or shortwave separately or simultaneously 4W output.
Caution
Be careful to limit exposure of your eyes to shortwave ultraviolet rays. These rays can "sunburn" the eyes and cause uncomfortable irritation. You should not look into a shortwave lamp when it is turned on. When working near a shortwave lamp we recommend the wearing of protective glasses. Longwave ultraviolet normally does not irritate the eyes but we would not recommend staring into an ultraviolet lamp anymore than we would recommend staring into any other light.