Essential in protecting light sensitive substances during transport and storage. Providing UV protection up to approx 500 nm wavelength. As colouration is only on the outer surface, DURAN® glass properties inside the bottle remain unchanged. Very uniform, durable and chemically resistant amber colour due to use of innovative technology. With easy-to-read scale and large labelling field for easy marking, in fired-on, highly durable white ceramic. Typical applications: storage and transport of light-sensitive substances.