GUV5WS is a single ended Germicidal Lamp provides highly efficient source of UV light for medical and commercial applications. It is efficient, simple, germ control and utilise low pressure mercury vapour to produce UV light at 253.7nm which is very effective for germicidal uses. This lamp is ozone-free quartz, hot cathode and pre-heat start. DANGER: Risk Group 3 – Ultraviolet Product These UV-C products are meant for disinfection purposes only and cannot be used for general illumination. The products generate high power UV-C light, which can cause serious injuries to eyes and/or skin. Avoid direct exposure of eyes and skin to the UV-C light. Only for use in closed enclosures, which protect users from UV-C light exposure. In case of lamp breakage, follow instructions: ventilate the room for 30 minutes and remove loose parts, preferably wearing gloves. Pack broken parts in a closed packaging (plastic bag) and dispose of as chemical waste. Do not use a vacuum cleaner.