Comparing Water Treatment
| PRODUCT | SIZE | WEIGHT | KILLS GIARDIA | KILLS VIRUSES | SHELF LIFE | COST | FILTERS TO REPLACE | VOLUME TREATED |
| POLAR PURE | 3" HT | 3 oz. | YES | YES | INDEFINITE | $10 - $15 | NO | 2000 Quarts |
| POTABLE AQUA | 2" HT | 1 oz. | YES | YES | 3 months once opened. | $10 - $15 | NO | 20 - 30 Quarts |
| FILTERS** | 7"-12" HT | 8oz. to 1.5lbs (new - unused) | YES | Filter must have iodine matrix | Depends on condition of filter and amount of use | $100 to $300 (plus cost of replacement filters) | YES ($40-$100 each) | Filter and water condition dependent |
**Filters for comparison are those which are not intended for group use and have a pore size of no more than 4.0 microns.