Some of these water straws filter 1000s of liters of clean water without having to treat the water with chemicals like chlorine, iodine, or other chemicals.Most are over 99.9 percent effective at removing harmful parasites and bacteria. They come in sealed bags, making them very easy to throw...
Each water filter must have the capacity to eliminate the dangerous particles from the contaminated water, you must look for a filter with UV lighting technology, chlorine dioxide or iodine treatment system. The filtration speed depends on how much amount of time it takes to filter the unclean ...