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PF-2 Elements - (Set of 2)
PF-2™ reduction elements are designed for use in conjunction with Black Berkey® water purification elements to adsorb the following unwanted elements found in drinking water.
- Fluoride
- Arsenic V and pre-oxidized Arsenic III
- Other residual heavy metal ions
Berkey® PF-2™ ELEMENTS (Set of Two)
SIZE: Length 6", width 2.5" - COLOR: White
REPLACEMENT: 1,000 gallons (3,785 liters)
The PF-2™ Fluoride and Arsenic Reduction Filters are made and assembled in the USA
- The Berkey PF-2™ Fluoride and Arsenic Reduction Elements adsorb the following unwanted elements found in drinking water:
- Fluoride: Sodium Fluoride, Sodium Fluorosilicate, Fluorosilicic Acid (aka Hydrofluorosilic Acid)
- Arsenic: V and pre-oxidized Arsenic III
- Other residual heavy metal ions
- Made from safe, non-leaching Polypropolene #5 that is BPA-free
- Sold in a set of 2
- Berkey PF-2™ Fluoride and Arsenic Reduction Elements are designed to be used in conjunction with the Black Berkey® Purification Elements only
- Attach to the bottom of the Black Berkey® Purification Elements and sit in the lower chamber of the Berkey unit
- Number of Berkey PF-2™ Elements in the bottom chamber must match the number of Black Berkey® Purification Elements in the top chamber; for example, 4 Black Berkey® Purification Elements would require 4 PF-2 Filters
- Set of 2 Berkey PF-2™ Elements need replacement after 1000 gallons of use
- The Berkey PF-2™ Fluoride and Arsenic Reduction Elements are covered under a six month warranty
PF-2™ reduction elements are designed for use in conjunction with Black Berkey® water purification elements to adsorb the following unwanted elements found in drinking water.
- Fluoride
- Arsenic V and pre-oxidized Arsenic III
- Other residual heavy metal ions
TECHNICAL INFORMATION:
FLUORIDE:
Testing for fluoride was based on 20-30ppm of the ion in the influent
aqueous 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 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
PF-2™ elements be replaced after 1,000 gallons
(3,785 liters). The
Royal Berkey® system is about
3.25 gallons (12.3 liters) therefore the
PF-2™ filters
should be replaced after 1,000/3.25 (3,785/12.3) or 307 refills. If the
system is refilled about one time per day, the
PF-2™'s
should be replaced after 10 months, if the system is refilled about
twice per day, the
PF-2™'s should be replaced about
every five months). Actual capacity is dependent on 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 elements.
NOTES:
1) Do not boil this element.
2) PF-2™ elements
reduce filtration flow rate by 15-20%.
3) Our original tests were done using gravity alone to purge the
PF-2™
elements. Since then, we have added a step by using purging buttons which
are much more efficient at removing any residual process dust from the
PF-2™ media. The test does not distinguish between activated alumina
(Al
2O3) and Aluminum (Al). So we had to use the total count of aluminum
and activated alumina in our tests.
4) The media used in the PF-2™ filter elements
contains high-grade activated alumina (Al
2O3), which currently is the
most efficient media available for extracting fluoride from water. Activated alumina is inert. Below
are the results we obtained when testing the
PF-2™ elements (the water was not pre-filtered
through the
Black Berkey® elements). The reduction
over time is due to additional residual process dust being washed free
from the
PF-2™ elements as the system is used. To
give a scale for comparison purposes we include test results from a
national brand toothpaste and water boiled in an aluminum pan.
- National brand toothpaste 52.878
ppm aluminum
- Water boiled in an aluminum pan for five minutes: 2.791 ppm aluminum
- PF2™ after conditioning (5 cycles): .178 ppm aluminum
- PF2™ after 10 Cycles: .037 ppm aluminum
- PF2™ after 20 Cycles: .029 ppm aluminum
While the above results indicate that the residual process dust adds a
minute amount of activated alumina to the water, the
Black
Berkey
® purification elements reduce aluminum from
the water. We tested water that naturally contained .320ppm aluminum and
filtered it through the combination of the
Black
Berkey
® and the post conditioned
PF-2™ filtration elements (5 cycles). The results
showed a net reduction in aluminum contamination (Raw influent: .320ppm
- Effluent after passing through the
Black Berkey®
and PF-2™ elements: .232ppm). Again, the standard
tests cannot distinguish between aluminum (Al) and activated alumina (Al
2O3), which is inert.
Nevertheless, the tests showed a net reduction by the
Black Berkey®
element in the combination of naturally occurring aluminum plus any
residual activated alumina (Al
2O3)process dust from the PF-2™ elements.
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