Way Too Cool Midwave and Longwave Ultraviolet Phosphor Sheets
This optional upgrade to the WTC 5-watt "THE TRIPLE" Ultraviolet Mineral Light will enable your lamp to emit not only the native 254nm Shortwave UV light, but also Midwave and Longwave UV as well. This can be ordered separate from the lamp if you forgot to order it initially or if you need replacement. Two sheets included. One for each wavelength. To use, open the back cover of the lamp and you insert one sheet into the thin slot at the end of the lamp. It will sit between the bulb and the UV bandpass filter, transforming the shortwave UV into either midwave or longwave UV.