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Black Berkey Purification Element FAQ

What is the shelf life of the Black Berkey purification elements?

The shelf life of the Black Berkey elements is indefinite. In other words they will last until you need them. We would advise however, if you intend to store them for a long period of time, that you store them in a zip-lock bag. This is because they are powerful enough to absorb contaminants from the air, which could reduce their expected life if you have a lot of airborne contaminants in the area in which they are being stored. A zip-lock back will prevent the above from occurring.

How often do the Black Berkey purification elements need to be replaced?

Each element has an expected life of 3,000 gallons or 6,000 gallons for a set of two.

I have been using my system for about six months and the flow rate has slowed down considerably. Do I need to replace the elements?

No, unlike other filtration elements Black Berkey purification elements are re-cleanable. What typically causes the filters to drip slowly is turbidity and sediment clogging the micro-pores of the purification elements. Simply remove the elements from your system, scrub the exterior of each element with preferably a white ScotchBrite® pad or stiff toothbrush. Simply scrub a section of the filter until you see a bit of black on the white pad then move to the next section. It's simple to do and takes less than a minute. Then re-prime each element and reinstall them. Your problem should now be fixed.

How do I know when it is time to replace the elements in my system?

The best way to gauge when to replace the filters is to do the following:

  • 1) Multiply the number of filters in your system by 3,000 gallons to get Total Gallons for all filters within the system.
  • 2) Next keep a track of how many times you need to refill the upper chamber in one week.
  • 3) Then multiply that figure times the capacity in gallons of your particular system (for example the Berkey Light system is 2.75 gallons) to determine Total Gallons Used per Week.
  • 4) Finally divide the Total Gallons Used per Week into the Total Gallons For All Filters and that will tell you how many weeks before the filters should be replaced.
  • 5) 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 system 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 system.

    I just purchased a Berkey system but the system is hardly filtering any water at all. Am I doing something wrong?

    Typically the problem you are experiencing is due to high water tension, which prevents the air from being purged from the micro pores of the new purification elements. Included with your Black Berkey elements is a priming button and instructions for use. Please remove and prime your purification elements, reinstall them and that should fix the problem.

    I just purchased a Berkey system but didn't receive a priming button. Instead, I think I received an extra black washer in the box. The instructions say to use the tan colored priming button. What gives?

    Please check in the box which held your Black Berkey purification elements. The box should contain two (2) elements. Attached to each element should be a rubber washer and a wing nut. Also in the boxes should be what could looks like another single black rubber washer. This is your priming button. It is thicker than the washer and the center hole is smaller. This black priming button can easily be confused with a washer; so we asked the manufacturer to change the color of the priming button back to tan.
     

    How do I prime the Black Berkey™ Purification Elements when water pressure is unavailable?

    The micro pores on the Black Berkey purification elements are extremely small, in fact they are small enough to filter red food coloring out of water. The benefit from having such extremely small pores is greater efficiency at removing pathogenic bacteria and other contaminates. The downside is that too much water tension can require that the purification elements be primed before they will flow properly. When you receive the purification elements, they are dry and air is trapped within the tiny micro fine pores. In certain parts of the world, water has more water tension than in other places and this can change from season to season. The higher the water tension, the more difficult it is for the water to force the air out of the micro fine pores using gravity alone. The pores that have air trapped within them do not allow water to pass through and therefore become an inaccessible passage for the water. This then causes the system to either filter very slowly or not at all. Before traveling to and using the system in an area without water pressure we recommend that the purification elements be primed using the priming button. If this however is not possible and water pressure is not available to use the priming button method, the elements can be primed approximately 50% by using the below method. In other words using this method, the elements will not purify as fast as they will by using the priming button method however they will run significantly faster than if the elements have not been primed at all. The alternate priming method is as follows:
    STEP 1: : If your system is assembled, remove the purification elements from the upper chamber. Next, fill the lower chamber with water, then place the purification elements into the water in the lower chamber, upside down with the stems facing upward, and put a ceramic coffee cup (or something else that will hold them under the water) on top of each purification element stem to force the element down under the water. Let the purification elements soak in the water for several hours. This will force some of the air out of the stubborn pores. NOTE: Make sure that opening in the stems of the purification elements are not underwater as we want the water to be forced through the pores rather than entering through the hole in the stem.
    STEP 2: The inside of the purification elements should now be full of water and significantly heavier. Try to keep as much water on the inside of the purification elements as is possible as you reassemble the purification element into the upper chamber by keeping the stems facing upward. Empty the water from the lower chamber and place the upper chamber back onto the lower chamber. Immediately fill the upper chamber with water. When the purification elements have water within the bore (inside core), more force is generated to draw water through the purification element. This is because the water that drips out of the purification elements also hydraulically pulls new water into the purification element as the purification element begins to work like a siphon. Thus, in addition to the "Push" of gravity, there is also a hydraulic "pull" and this drastically improves the ability of the water to force the air from the micro pores. The above method is less efficient than priming the purification elements with the priming button but should be about 75-80% effective in clearing the blocked micro pores.
    Let the water in the lower chamber run to waste and refill the upper chamber with water. Your Black Berkey elements are now primed and ready for use.

    What is the Micron Rating of the Black Berkey purification elements?

    With respect to the micron rating, we do not use or publish a micron rating for the Black Berkey elements for the following reasons. There is much confusion with respect to nominal and absolute micron ratings. An absolute micron rating is one that states the maximum pore size expected within an element. The nominal micron rating is the average pore size within the element. This means that if 90% of the pores are .02 microns and ten percent are 2 microns, one could claim the nominal micron rating as .2 microns, which would imply that pathogenic bacteria and parasites would be totally removed. But in reality the bulk of the water would channel through the larger 2-micron pores and thereby allow both bacteria and parasites to pass through. Therefore a nominal micron-rating claim can be very misleading.
    With respect to the absolute micron rating, there is also confusion because there are two different standards to determine absolute; in the US the standard is 99.9% removal, but the international standard in 99.99% removal or 10 times greater removal.
    Clever marketers of products can use the confusion over the above differences to make product "A" appear to be better than product "B" when product B may be far superior in reality. For example, we used to report an absolute rating using the international standard because we have a large international customer base. Several years ago we published a rating on our ceramic filters. A particular company began to publish that our elements were .9 microns whereas theirs were .2 microns. However, our micron rating was based on absolute (international) while theirs was based on a nominal (US) rating. When tested at Spectrum Labs, it was found that at the .2 to .3 microns range our filter removed more particulate than the other brand. Unfortunately many people make there purchasing decisions based on a micron rating that can be legitimately distorted and to a significant degree.
    We soon became weary of trying to explain the above to our customers and so we decided not to participate any longer in publishing a micron rating. Rather, we think an absolute pathogenic bacteria removal rate is a far better gauge because it is far more difficult to abuse. Based on that criterion, the Black Berkey elements remove greater than 99.9999999% of pathogenic bacteria such as E.coli. To our knowledge, no other personal filtration element can match that capability. In fact, the Black Berkey elements are so powerful, they are unique in their ability to mechanically remove red food coloring from water.

    It is time for me to replace my filter elements but I have a different brand name of gravity filter. Will the Black Berkey elements fit my system?

    Yes the Black Berkey purification elements are interchangeable with other gravity systems and the PF-2 filters can be used as well.

    It appears that there are chalk markings on my Black Berkey™ elements, is this element flawed?

    No, The Black Berkey purification elements on a rare occasion may have chalk markings on them that are nothing more than production lots or numbers. While we strive to make sure each and every element looks the same, occasionally elements with these markings slip through our rigid quality control process. They will have no impact of the element's performance and can be wiped off with a wet cloth or scrubbed off with a scrub pad.

    It appears that there is a slight dimple in one of my Black Berkey elements, is this element flawed?

    No, The Black Berkey purification elements are about twice as thick as are standard gravity filter elements. This is a built in redundancy or overkill, if you will. The minor dimple in the filter should not cause any decrease in the elements efficiency. However to check its performance, make sure the wing nuts are on tight and do the following:
    Test your filters by filling the upper chamber with water then add a tablespoon of red food coloring for every gallon of water within your upper chamber. If the red food coloring is removed entirely, your elements are working properly. If this does not occur check to make sure that the wing nuts on your elements are securely tightened then re-run the test.

    I have found that when I boil the water or freeze it into ice cubes, I sometimes get little white floating things in the water. What is this?

    With respect to the little white floaters in the water, it is not bacteria but rather a problem that sometimes occurs with hard (heavily mineralized) water. When the PH level of the purified water is raised, the acidity of the water goes down and the water is no longer able to hold as many minerals in solution. When this happens the minerals begin to precipitate out over time and depending on the mineral composition they will either sink to the bottom or float to the top. This process is known as flocculation and the precipitated minerals are usually referred to as "white floaters". The bottom line is that this is nothing to be concerned about, the white floaters are minerals that were already in your water; they are now simply visible whereas they were previously invisible due to their suspension in an ionic form.

    Will a Berkey system work with softened water?

    The Black Berkey purification elements are designed to remove heavy metals, but will not remove mineral salts, which are added by the water softener. We highly recommend that you obtain pre-softened water to use in your Berkey system. You can use one of our purification systems on a regular basis by bypassing your water softener to get your drinking water. Most water softeners have a bypass valve or way to get water before it passes through your softener. This is where you can obtain drinking water to run through our purification system.

    What are the Black Berkey purification elements made out of and how do they work?

    Without getting too complex, several methodologies are utilized by the Black Berkey purification elements. The elements are composed of a formulation of more than a half dozen different media types constructed into a very fine matrix creating millions of micro-fine pores. The pores are so small that pathogenic bacteria, cysts, parasites, sediment and sedimentary minerals are not able to pass through them. The media formulation both "absorbs" some contaminates and "adsorbs" other contaminates. Next, heavy metals ions (mineral molecules) are extracted through an Ion exchange process where they are essentially electrically bonded to the media. Finally, our filter elements are designed such that each water molecule can take several minutes to pass through the filter elements whereas these molecules passing through other filtration systems pass through those filters in literally microseconds. The longer the water molecules are in contact with any media, the greater the removal of the various contaminates.

    Are the Black Berkey Purification Elements or Berkey PF-2 and PF-4 recyclable?

    We don't recommend the recycling of the Black Berkey Purification Elements, PF-2s or PF-4s. The shells of the Berkey PF-2 are made of Polypropylene, which is Recycle Code 5. Uses of Polypro (for short) include catsup bottles, yogurt containers, margarine tubs & medicine bottles. However, there is no recycle code for the Berkey PF elements. As we understand it, a recycle code cannot be assigned since the element is sealed and contains material inside for arsenic & fluoride reduction. To recycle, one would have to cut the element open and remove the material before recycling the plastic shell.

    The same issue applies to the Black Berkey Purification Elements. The complex matrix of materials involved in the manufacture of the BB9 elements does not allow the elements to be easily classified by a single recycle code. In addition, with both of these types of elements, there is no way of knowing what contaminants are in the media after use.

    How should I store my Black Berkey Purification Elements and how long is their shelf-life?

    It is best to empty both chambers before storing because anytime water is still it becomes stagnant, which means it can produce bacteria. You may consider washing your chambers with soapy water before leaving them to dry. If you have used your elements, you should fully dry them before storing. We offer a tool to assist in both priming and purging. This tool is called a Black Berkey Primer. The benefit to purging the Black Berkey Purification Elements is that they are dried very quickly and cleaned at the same time. Another option for drying your elements is to leave them on a window sill for one to three day and allow them to air-dry. The key is to ensure they are bone-dry before storing them, to prevent any bacterial growth.

    For long term storage, we recommend sealing the purification elements. This can be done with a storage bag such as a sealable sandwich bag. The elements are extremely powerful and can absorb odors and smoke from the air. By sealing them in a storage bag, they will not absorb any odors from the air. When you are ready to use your elements, they will need to be re-primed by scrubbing them clean with a scotch brite pad or stiff brush. In theory, the shelf life of the elements is indefinite.

    What happens if I use my Black Berkey Purification Elements after 3,000 gallons?

    We determine the typical lifespan of the Black Berkey Purification Elements by their ability to reduce heavy metals. The breakthrough of heavy minerals can occur at about 3,000 gallons. Heavy metals can leach through beyond 3,000 gallons. However, the elements can be used beyond that point because other reductions continue well beyond 3,000 gallons.

    How does the filter element in the Berkey system deal with viruses?

    The micro fine pores are so small that they prevent micro fine particulate such as bacteria, viruses and even food coloring particulate from passing through the tortuous path that water is able to pass through. These contaminates are trapped in the micro fine pores while the much smaller H2O molecules are not. This method separates the contaminates from the purified water.

    How do the Black Berkey Elements handle beneficial minerals in the water?

    The technology utilized in the Black Berkey purification elements is designed not to remove ionic minerals from the water. The elements are however, designed to remove sedimentary minerals.

    Additionally, in order to reduce heavy metals, there are several types of media used in the proprietary formulation that have a specific affinity for heavy metals. The best part is that the media used in the Black Berkey elements is designed to not remove beneficial minerals. Because the media formulation does not have an affinity for beneficial minerals such as calcium and magnesium, these minerals should pass right on through the elements.

    Beneficial minerals that are recommended for the human body are typically categorized into two different groups:

  • Major Minerals: Minerals that are recommended in our diet at recommended amounts greater than 100mg/day.
  • Trace Minerals: Minerals that are recommended in our diet at recommended amounts less than 100mg/day.
  • Why is my PH level higher after using the Black Berkey Purification Elements?

    When water is filtered through our system, the Black Berkey Purification Elements increase the PH level of the water. This is healthful because pathogenic bacteria and viruses thrive in acidic environments and have difficulty surviving in alkaline environments. An environment with more alkalinity does have a higher PH level. The PH level will depend on various factors including what the PH level of the pre-filtered water is.

    I did a TDS reading on the purified water and was surprised to find that the reading was about the same with the purified water as it was with the unpurified water. Is my system working properly?

    Yes, a TDS meter measures only Total Dissolved Solids or minerals; dissolved solids are simply dissolved minerals in an ionic form. A TDS meter does not measure the amount of biological and chemical contaminates. Black Berkey elements are designed to leave in your water the healthful and beneficial minerals and to extract only the unwanted heavy metals such as lead and mercury as well as sedimentary minerals such as iron oxide and aluminum. Therefore, your TDS reading will not change much unless you have a significant amount of heavy metals or sedimentary minerals in your water.