Home air purifiers with HEPA filters tend to have the highest CADR ratings, between 240 and 180. Those with a 179 to 120 are also suitable. If the rating is lower than 60 for any of the tested particles, the machine may not sufficiently remove the pollutant from the air. Who should use...
Ultraviolet water purifiers, as the name suggests, use UV radiation to purify the water. It is specially designed to kill microorganisms like bacteria, viruses, parasites, and cysts in the water. Sometimes even if the water doesn’t contain other impurities, it may contain germs which can be...
Yettakingchanceswithdrinkingwaterinawell-settledcommunityis,inone sense,alotlessdangerousthantryingoutwaterinawildernessawayfrom medicalhelp. MAKINGSUREITISPURE Watercanberidofgermsbyboiling.Theexacttimerequiredtoaccomplishthis dependsonaltitude,thenatureofimpurityandseveralotherfactors.Asafe ...