First Need XL Replacement Canister

The First Need purifier is far superior to other filters I have used, including the PUR/Katadyn hiker models. The First Need is much easier to use (no messing with keeping clean & dirty hoses separate-a major plus with Boy Scouts), fits popular water bottles more easily, and pumps nearly twice as fast as comparable filters. Highly recommended. Worth the higher price.

Filters good when new but once it starts to plug its hard to keep unplugged ,water being filtered needs to be clear water plugs fast if not,back flushing doesnt make sense you use the same pump you use to pump contaminated water through the filter to put in good water to pump backwards through the filter to clean out would not recommend to much cost for the trouble to maintain