Is UV light dangerous?
Exposure to ultraviolet light can cause skin and eye damage. Used as directed, SteriPEN will not cause UV exposure to the user. Note that SteriPEN’s lamp emits a number of wavelengths, some of which are in the visible range. The visible blue light given off by SteriPEN is just that, visible blue light — not ultra violet — and it is not dangerous to look at. In fact while the visible light has no germicidal effect, it is an important indicator that the lamp is functioning properly. If no light is visible the lamp is malfunctioning. UV-C will not pass through most materials. Drinking containers made from glass, ceramic, metal, and nearly all plastics block UV-C transmission. Also, the underside of the air/water interface in a water container acts as a very effective reflector for UV-C. As a result, when SteriPEN’s lamp is immersed in virtually any drinking vessel, the UV-C is well contained. Note that SteriPEN’s water sensors prevent it from operating unless the lamp is completely imme
