All Prices Include VAT
KERNOWRAT
Practical Solutions
VAT No. -
PF-2 TECHNICAL INFORMATION:
FLUORIDE: Testing for fluoride was based on 20-30ppm of the ion in the influent aqueous solution at a flow
FLUORIDE: Testing for fluoride was based on 20-
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 3,800 litres.
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-
The Royal Berkey® system is about 3.25 gallons (12.3 litres) 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
he 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) The media used in the PF-2 ™ filter elements contains high-grade activated aluminium oxide, which currently is
NOTES:
1) Do not boil this element.
2) PF-
3) The media used in the
the most efficient media available for extracting fluoride from water. 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 aluminium pan.
• National brand toothpaste 52.878 ppm aluminium
• Water boiled in an aluminium pan for five minutes: 2.791 ppm aluminium
• PF2™ after conditioning (5 cycles): .178 ppm aluminium
• PF2™ after 10 Cycles: .037 ppm aluminium
• PF2™ after 20 Cycles: .029 ppm aluminium
While the above results indicate that the residual process dust adds a minute amount of aluminium to the water,
• National brand toothpaste 52.878 ppm aluminium
• Water boiled in an aluminium pan for five minutes: 2.791 ppm aluminium
• PF2™ after conditioning (5 cycles): .178 ppm aluminium
• PF2™ after 10 Cycles: .037 ppm aluminium
• PF2™ after 20 Cycles: .029 ppm aluminium
While the above results indicate that the residual process dust adds a minute amount of aluminium to the water,
the Black Berkey® purification elements reduce aluminium from the water. We tested water that naturally
contained .320ppm aluminium 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 aluminium contamination
(Raw influent: .320ppm - Effluent after passing through the Black Berkey® and PF-2 ™ elements: .232ppm).
In other words the Black Berkey® elements removed more aluminium from the water than was added by
the PF-2 ™ elements.
PF-2 and PF-4 FAQ'S
What are the dimensions of the PF-2 and PF-4 elements?
The individual elements are 6” in length and 2.5” in diameter.
Do Black Berkey or Super Sterasyl filter elements reduce fluoride in the water?
No, in order to reduce fluoride in your water you will need to use post filters that work in conjunction with the filters in your system.
No, in order to reduce fluoride in your water you will need to use post filters that work in conjunction with the filters in your system.
We have two types, PF-2's, which are used in conjunction with the Black Berkey ® purification elements, and the PF-4 filters that are used
in conjunction with our ceramic filters.
I noticed that the PF-
No, the PF2's are used in conjunction with the Black Berkey® purification elements and the PF-
ceramic filters. The Black Berkey® elements remove MTBE and reduce heavy metals whereas the ceramic filters do not therefore; we
incorporated MTBE and heavy metals reduction capabilities into the PF-4 elements.
What is the life of the PF-4 filters?
Each set of four PF-4 filters is will last for 3,800 litres or six months whichever comes first. The reason for the six-month limitation is that
the carbon within the PF-4 filters extracts contaminates that can be nutrients on which bacteria can grow. If the filters are used longer than
six months “grow-through” can occur.
What is the life of the PF-2 filters?
Each set of two PF-2 filters is will last for 3,800 litres. Since these elements contain pure fluoride and arsenic reduction media and no
What is the life of the PF-
carbon, there is no six-month limitation rule as is the case with the PF-4 elements.
How do I know when 3,800 litres has been filtered and when its time to replace the elements?
The best way to gauge when to replace the filters is to do the following:
How do I know when 3,800 litres has been filtered and when its time to replace the elements?
The best way to gauge when to replace the filters is to do the following:
1) Keep a track of how many times per week you need to refill your system.
2) Then multiply that figure times the capacity in gallons of your particular system (for example the Berkey light™ system is 10.45 litres) to
determine Total Gallons Used Per Week.
3) Finally divide the Total Gallons Used Per Week into the 3800 gallons and that will tell you how many weeks before the filters should be
replaced.
4) Next calculate the future date for replacement (52 weeks per year) and write that date on a sticker and attach it to the bottom of your
system for future reference.
By the way, if you have been using your fluoride reduction filters for some time now, you can still use the above formula to determine when
to replace the elements. Just count forward from the date you purchased your elements.
I installed my PF-2 elements but my water is a bit cloudy and why does it have a funny taste?
The odd taste is from process dust that may not have been washed free from the filter elements during the conditioning process.
Please remove the PF-2 elements and re-condition them for 60 seconds on both ends. This should expel any residual process dust and fix
the problem.
Do the PF-2 elements replace the Black Berkey ® purification elements?
No the Black Berkey® elements fit into the base of the upper chamber with the stems of the filters protruding through the holes in the base
Do the PF-
No the Black Berkey® elements fit into the base of the upper chamber with the stems of the filters protruding through the holes in the base
of the upper chamber. The protruding stems are threaded and the PF-2 filters screw onto these threaded stems so that the PF-2's hang down
into the lower chamber. The water flows from the upper chamber, through the Black Berkey® elements, into the PF-2 filters and then into
the lower chamber. The “PF” in PF-2 stands for Post Filter. So in answer to your question, no they do not replace the black filters but rather
work in conjunction with them.
If I begin using use the PF-2 elements, will I need more counter space for my system?
No, the PF-2's attach to the stems of the Black Berkey ® elements and hang down into the interior of the lower chamber of the system
If I begin using use the PF-
requiring no additional counter space.
I understand that the media used within the fluoride reduction elements is activated alumina, it that the same thing as aluminium?
The media used to extract the fluoride and arsenic is activated alumina. Since fluoride is a by-product of aluminium production, fluoride has
I understand that the media used within the fluoride reduction elements is activated alumina, it that the same thing as aluminium?
The media used to extract the fluoride and arsenic is activated alumina. Since fluoride is a by-
a natural affinity to recombine with activated alumina making it an ideal extraction media. We are not chemists but will communicate our
understanding on the subject. Both nutritionist and lab technicians have informed us that aluminium and alumina are two separate animals.
Aluminium can cross the blood brain barrier and cause problems with the brain whereas alumina is inert. It is our understanding that alumina
is oxidized aluminium. Aluminum is regulated whereas alumina is not for example, alumina is the material used for making the paste in
toothpaste. At any rate, when testing for aluminium in water, most tests cannot distinguish between aluminium ions and oxidized alumina.
Since we are not chemists, we tested the effluent from the filters and included that information in our brochure. While we were not
required to do so, we felt that it was important to disclose to our customers what our results were so that they would have the necessary
information to do further research on the issue should they desire to do so. We thin it was significant in the test we conducted using the
combination of Black Berkey® elements and PF-2 elements there was a net reduction in the tested aluminium content of the source water
vs. the purified water. Again that test did not distinguish between aluminium and alumina. The bottom line is that the media utilized is
oxidized alumina and not aluminium.
I have high PH in my water, will that reduce the efficiency of the PF-2 elements?
That is correct, high or low PH impedes the ability of the media to remove fluoride.
I have high PH in my water, will that reduce the efficiency of the PF-
That is correct, high or low PH impedes the ability of the media to remove fluoride.
PF-4 ™ - POST FILTER REDUCTION ELEMENTS
PF-4 Post Filter Reduction
Elements fitted
PF-4 - £59.83 / Set 4
PF-
