- Aristo Light Sources
- Manufacturer of cold light heads for enlargers, microscope lighting, and other custom lights. - IonOptix Corporation
 - Quality UV Lamps
- Providers of UV lamps for use within aquatic applications and Ozone producing systems. - UVP
- Manufacturer of ultraviolet lamps including hand-held, bench and miniature UV models, and related equipment plus gel documentation and image analysis software for electrophoresis applications. - Welch Allyn Lighting
- Developer of hi lux, arc, meral halide, short arc,halogen, miniature, sub miniate, UV, IR and speciality lamps, as well as fibre optic illuminators.
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