J.J. asked this question:
I have been using Flow-Max Filters for many years to clean water in Haiti and Cuba. We typically use the 2 ¾” X 20” pleated filters in 50 micron, 5 micron, 1 micron and 0.35 or 0.20 micron. I have checked your website, but cannot find any performance data from the manufacturer on how well effective these filters are against cysts, e coli, cholera, and other water borne bacteria/pathogens. Can you help me with this kind of information?
The Water Doctor Answered:
You can't find it because it doesn't exist. There is no data. They are not NSF Certified, therefore there is no testing. It's what they say it is... if you care to believe that.
That's part of the reason we are no longer selling Flow-Max Filters. There is little or no performance data on them, they are not NSF Certified, and frankly, our testing shows that they don't do what is expected.
In fact, they say "Made in USA" on the label, but I have been told by people that work for the company that they are not made in USA. I have my suspicions, but I don't really know.
What I do know, is the following:
- Pleated filters like Flow-Max are absolutely the best water to filter water that contains significant amounts of sticks, stones, fish turtles or actually: sand, silt and sediment.
- Flow-Max filters are not NSF Certified, which should immediately raise a red flag. I mean, we are talking about your home water filters or your businesses water filters, shouldn't you REQUIRE that a filter you use for that be NSF Certified?
- For a filter to be NSF Certified, it HAS to meet the testing protocol of NSF. Then, when you publish your specifications, consumers can rest assure that what you say is the way it is. AS an example, if a company says that they have a .35 micron absolute filter, you can rest assured that that it will remove over 99.98% of everything over .35 microns. Without NSF Certification, you can say it, but is it true?
- That's why we sell Harmsco. Their filters are NSF Certified. You can take what they say to the bank.
- Harmsco is bigger, badder and better. Take a 2.5" x 10" pleated filter. If you cut it apart and stretch the media out, you will find that the Flow-Max filter had 58 inches of media. Does that sound good? Harmsco has 91 inches of media that is more robust.
- Harmsco filters better, last longer and can be cleaned and reused more often.
Guess which filter we now sell?