Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: How does this filtration differ from reverse osmosis filtration?
Document: I used to love my Zerowater system but they recently dropped their filter quality below my requirements. After much shopping and reading of reviews, I decided to give this system a try. It was easy to assemble and produced acceptable filtration without a lot of effort. The quality is there and I like the water flavor. If I have any regrets, it would be the size of the filter. 2 gallons isn't much and the time required for filtration is substantial.
I had read a great deal about other water filtration products, even watched some videos people had posted, and this one seemed to meet our needs. It was also a good selling point that so many people had so many positive things to say about it.What can I say, it's a great product. I definitely recommend the Big Berkey (British Berkefeld with 4 ceramic filters) if you have water issues or if you just want nice clear tasting water that makes you want to come back for more.
the order arrived with two of the ceramic filters broken in half. Called provider to have new filters replaced. I was sent a warranty form to fill out and forward to Berkey.From that point, it went down hill. It took several phone calls and about one month to recieve the replacement filters.
love it !!!! The only problem I had was I needed bit of Teflon tape on the threads to spigot. I couldn't get our city waterpast my nose and had to buy drinking water. NO MORE. This is the BEST filter system Ihave found. No more chlorinated fecal samples. Did have a broken spigot within 10 days of using it. Apparently they have a better quality one , but it's not stock on each unit.
found out about this item from an army buddy and love always having good and safe drinking water available. no more having to drag big water jugs to camp now and don't have to put up with stale water. this is really a great item!
You won't go wrong with this product!
You need to use all four filters to get any volume out of this, but the filters can be cleaned and last a very long time, so get all four and use all four. So far I have filtered about 200 gallons with no problems.
Works well, looks good, water tastes great! Very happy with this item.Before you buy, be aware that it is large and heavy. Make sure you have a safe place to keep it so that the spout hangs over the edge of a counter. Berkey makes platform stands for these and has replacement parts on their web site.Update: After a few weeks, the plastic spout cracked!
Wonderfully clean water! It was easy to assemble and doesn't take up too much room. My only small issue is that it's quite tall and because of that I couldn't put it near the sink, which makes filling it a little tricky. Still, I'm glad to have such pure water.
We use this Big Berkey to filter our tap water, but I like the fact that I could scoop up creek water and come out with clean water after it goes through these four ceramic filters. The end result is good tasting water. We have a large glass dispenser with a spigot that we transfer the Berkey water to...that way we can always have a full container in process.
Answer: no