| |
TECHNICAL INFORMATION:
FLUORIDE: Testing for fluoride was based on 20-30ppm of
the ion in the influent water solution at a flow rate of no
more than 3 gpm (11 lpm) per cubic foot of media. Results of <
1ppm of the fluoride ion in the effluent were typical for the filter
media (>95% reduction). Under optimum conditions, effluent
concentrations of less than 50 ppb were readily achieved
(>99.75% reduction).
ARSENIC: This product uniquely targets the entire family
of arsenic oxide anions as well as the arsenic cations.
REPLACEMENT:
Under normal conditions it is recommended that each set of two
Berkey PF-2™ fluoride water filters
should be replaced after
1,000 gallons (3,785 liters). Example: If you had a
Big Berkey system (2 gallon
capacity) and you refilled the system 2 times per day, you would
be using 4 gallons of water per day. Under these conditions the
PF-2 fluoride filter elements would last 250 days (1000 gal. divided by 4 = 250)
or a little over 8 months. Actual replacement period for the
PF-2 is
dependent on how much water You would use and the presence of other competing contaminants in the
source water. High levels of fluoride, arsenic and heavy metals
may reduce the capacity and efficiency of the Berkey filter elements.
NOTES:
1) Do not boil the fluoride filter elements.
2) PF-2™ canisters reduce water filtration flow rate
by 15-20%.

The Berkey PF-2 installed on the Berkey light system. |
|