The Pur
Ultimate with Lead Reduction PPT711W is part of the
Water Filters test program at
Consumer Reports. In our lab tests, Water Filter Pitchers
models like the Ultimate with Lead Reduction PPT711W are rated on multiple criteria, such as those
listed below.
Flavor and Odor Reduction
A measure of how effectively the filter removed flavor taints, along with the resulting odor taints, that CR added to plain water with minimal intrinsic flavor and odor (the "control" water). The test measured how close the flavor and odor of the filtered water was to that of the control water.
Flow rate
Flow rate is based on the number of minutes the pitcher took to filter 32 ounces of water.
Clogging
The percent change in a filter's flow rate over the course of the cartridge's capacity.