Does the water have to be clear to have the SteriPEN be effective?
We recommend that the water be clear to ensure that the ultraviolet light is exposed to all potential microbes that may be in the water. Discolored or cloudy water should be pre-filtered until clear prior to SteriPEN treatment. The SteriPEN Pre-Filter or FitsAll Filter can be used to help clarify water. Coffee filters or a shirt can also be used in an emergency. We recommend that the water be clear to ensure that the ultraviolet light is exposed to all potential microbes that may be in the water. Discolored or cloudy water should be pre-filtered until clear prior to SteriPEN treatment. The SteriPEN Pre-Filter or FitsAll Filter can be used to help clarify water. Coffee filters or a shirt can also be used in an emergency.