U-V transmitting visible absorbing filter made from premium ZWB1 material for optimal performance. Precision-engineered with a thickness tolerance of ±0.05mm, ensuring reliable and consistent results in laboratory applications. Features a diameter of 40mm and a thickness of 2mm, making it suitable for various optical setups and experiments. Cold working process enhances the filter's surface accuracy, achieving a rating of /4@632.8nm for superior clarity. devised for high-efficiency use with more than 90% effective aperture, ideal for scientific research and testing environments.