ULO Optics is a supplier of precision optics based in Stevenage, Hertfordshire. They have been supplying High Power C02 optics including lenses, mirrors, cavity optics and scanner optics since 1982. Ulo optics also manufacture beam delivery systems for industrial applications. ULO Optics have recently diversified into 1 micron optics. ULO Optics is an ISO certified company who have a track record of delivery high quality optics at competitive prices to customers around the world. When it comes to visible or UV wavelengths, ULO has a vast wealth of experience and has manufactured precision optics from many materials. PTR is also the manufacturer of the HSE phase contrast test slide used in asbestos microscopy.