The LS-4 still proves to be the most popular lamp in the Raytech Compact Ultraviolet line today. This compact and low cost lamp offers everything one can expect and is simplistic to use. This model is also featured as our “Select-O-Wave” model which contains a sliding wavelength selector allowing you to either use longwave, shortwave or both simultaneously from the same tube. This lamp also includes The Story of Fluorescence.

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