New 3-stage filter, 0.01 micron, in new, unopened box.
Stage 1: Ultra Filter Pre-Filter
First, contaminated water passes through the 0.1 Micron Pre-Filter that acts like a barrier to help remove algae, giardia, e.coli, protozoa and cryptosporidium. The Pre-Filter can be back washed and reused up to 100,000 liters.
Stage 2: Carbon Filter
Then the water moves through the Carbon Filter - located inside the device, the Carbon Filter is designed to help reduce heavy metals, chemicals and pollutants by absorbing the contaminants. The Carbon Filter can be cleaned and reused up to 2,000 liters.
Stage 3: Internal Ultra Filter
Finally, water passes the final Internal Ultra Filter. Independent tests have shown that the 0.01 Micron Ultra Filter can filter out 99.999% of testes virus and staph. The Ultra Filter can be easily back washed and reused up to 100,000 liters.