Features: The black inspection tube is made of blue-black glass, and the inner tube wall is coated with phosphor. The light generated by this type of light is only radiated in the ultraviolet wavelength range of 300-400 nm, and its center value is 365 nm, which can invisible ultraviolet light. Radiation is converted to visible light, the so-called fluorescence effect, so they are suitable for all applications involving fluorescence analysis. Specification: 100% brand new quality. Item Name:T8 Ultraviolet lamp Material:High boron Net content: 6ml Voltage: 220V Wattage: 8W Lamp type: T8 Color:As the picture shows Size:As the picture show(1inch = 2.54cm) Package includes: 1* T8 Ultraviolet lamp Note: 1.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed on the pictures. 2.Please forgive 1 cm/0.39"-3 cm/1.18" measuring deviation due to manual measurement.