Regarding the Black Berkey Elements and the concern about them working properly as designed, there is a simple diagnostic that can be run. This diagnostic will help determine that the Black Berkeys are working properly:
- If you are using the PF2 Fluoride/Arsenic Reduction Elements, disconnect them from the Black Berkeys.
- Empty the Bottom & top chambers of your Berkey.
- Place cups in the bottom chamber, one directly under each one of the Black Elements which are still attached in the top chamber. These will serve to receive water from the Black Element directly above it when you replace the top chamber, so be sure to align the cups so that the water falls directly into the cup.
- Replace the top chamber over the bottom chamber and fill the top chamber half to three-quarters of capacity.
- Add 1/2 tablespoon or less of RED food coloring. It must be red because there are no minerals within red food coloring. Blue/Green food coloring contain minerals that will pass through, thus indicating a false positive.
- Allow the cups in the bottom chamber to receive sufficient amount of water so that you can distinguish that the red color is being properly removed.
- If the water is clear, then the filters are working properly. If the color is making it through to the bottom chamber, then re-prime the corresponding Black Element(s) and repeat the diagnostic. It would only be necessary to re-prime the Black Element(s) which allowed color to pass through.
- If, after re-priming the Black Element(s), color makes it through any of the filters, the cup with the color indicates a Black Element that needs to be changed with a replacement.
The Black Elements (which come in sets of two) are rated at 6,000 gallons of tap water per set. That is 3,000 gallons of tap water per Black Element. Tap water is the standard because water sources vary greatly in contaminant levels, i.e. creek, lake, pond, river, stream, well, etc. Because the contaminant levels of different water sources vary, sets of Black Berkey Elements may or may not reach the 6,000 gallon benchmark. Priming and re-priming the Black Berkeys will enhance the lifespan of the Elements, but eventual replacement of the Elements with usage is to be expected. There is no such thing as a water purifying filter that lasts indefinitely. The filters would only fail if they have reached their saturation level for removing/reducing contaminants, or if they are damaged/defective.
The manufacturer, New Millennium Concepts, Ltd., (NMC) has been and continues to be committed to providing quality products. Quality-assurance practices have always been in place and the adhesive issue in question has been resolved. For those who believe they need warranty service, NMC continues to offer their guarantee:
http://berkeywater.com/FAQs/10j_Guarantee.html.
Regarding the Amazon post referenced above, we are familiar with the individual ( Mr. W.C.) who has posted those comments. His intent is to gather validation from others for his views. While he has the right to voice his opinion, his deliberate accusations of fraud are not to be taken lightly. In fact, his comments (found elsewhere on the internet attacking other companies and products) are an accusation of criminal activity on behalf of NMC...legally different from an opinion. He is sensational and understands nothing of manufacturing and production, nor is he informed on scientific lab standards and the politics involved with "pay-to-play" certification standards. Suffice it to say that individuals like him pop up from time to time, but we stand with NMC in our use and distribution of the Berkey Water Purification Systems.
The lab testing was conducted at the referenced labs, period. NMC routinely conducts quality assurance controls and tests . Regarding NSF or other certifying entities, the Berkey Systems have met and/or exceeded the Standards that labs utilize in their evaluations of claims.
Hope this helps!
theberkeyguy