*Berkey PF-2TM Fluoride and Arsenic Reduction Elements

Berkey PF-2 Fluoride & Arsenic filters are designed to be used in conjunction with Black Berkey Elements only

PF-2 filters reduce the following elements:

• Fluoride
• Arsenic V and peroxidized Arsenic III
• Targets entire family of arsenic oxide anions as well as arsenic cations
• Other residula heavy metal ions

Details

• Comes in sets of 2.
• Constructed of: Non-leaching polypropylene #5 that is BPA-free plastic
• Can be used with Berkey Travel, Big, Royal, Imperial, Crown, and Light
• PF-2 filters attach to bottom of Black Berkey elements hanging in the lower chamber
• Filter capacity: 3,785 liters per set of 2 PF-2 filters under normal conditions. Filtering high amounts of Fluoride and Arsenic will reduce capacity and efficiency of filters
• General Rule: 1 sysem fill per day results in a PF-2 filters life of approximately 1 year
• PF-2 filters will slow the rate of filtration by 15-20%

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 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

Notes:

1. Do not boil this element.
2. The water temperature will rise during the purging process. Therefore use only COLD water to purge elements as the use of hot water may result in uncomfortable or unsafe water temperatures.
3. Berkey PF-2™ elements reduce filtration flow rate by 15-20%.
4. When lower reservoir is full of water, the Berkey PF-2™ filters will be immersed.
5. When water level in lower reservoir rises above the bottom of the Berkey PF-2™ elements, it is normal for small amounts of water to burp through threads connecting Berkey PF-2™ elements to Black Berkey® purification elements.
6. If residual process dust is still visible after purging, repeat the purging and installation process as described above. If residual process dust continues to appear in your Berkey® system, it may take up to 10 batches of water to cease.
7. If/when you conduct the "Red Food Color Test" for the Black Berkey® purification elements, you must remove the Berkey PF- 2™ elements first. Failure to do so may result in the voiding of the Berkey PF-2™ element warranty.
8. The lower reservoir in most gravity purification systems has a two to three gallon capacity and a typical household uses about one refill per day. We recommend that the upper reservoir be filled at night. The water from upper reservoir should be purified by morning. It is normal for the purification process to slow down significantly when water level in lower reservoir rises above the bottom of the Berkey PF-2™ elements. Households requiring more water can speed up the flow rate by drawing off the purified water into a water pitcher or other container when water level in lower reservoir rises above the bottom of the Berkey PF-2™ elements

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