The Pur FM-3700B is part of the water filter
test program at Consumer Reports. In our lab tests, water filter
models like the FM-3700B are rated on multiple criteria, such as those listed below.
Lead removal indicates the percentage of lead that was removed by each filter.
Chloroform removal rates the percentage of chloroform removed. A filter's ability to remove chloroform predicts how well it will remove organic compounds as well as byproducts created by disinfectants used by water systems.
Flow rate is how fast a gallon of water filtered through the cartridge. The criteria for flow rate scores differ between different types of filters. Faucet-mount, countertop, and undersink models have the same criterion; carafes and reverse osmosis models each have their own.
About This Brand
Helen of Troy's PUR brand dominates the faucet-mounted market. The manufacturer offers a wide range of products with features such as a filter-life indicator. Its major introduction has been the Flavor Option faucet filter, which can add five fruit flavors to the filtered water with the push of a button. It's available at national chains such as Walmart, Target, Bed Bath & Beyond, Lowe's, Home Depot, and Sears and at hardware and plumbing-supply stores, drug stores, and online retailers
Features & Specs - Pur FM-3700B
Filter cost Filter cost per year is based on claimed cartridge life span. For certain reverse osmosis units, professional service (PS) is recommended by the manufacturer. The filter cost/yr. for the reverse osmosis units does not include the osmotic membrane which typically lasts at least two years
Filter-life indicator Filter-life indicator shows models with this feature.