RO unit

[beleg]

Hey people,
Well to solve my hardness problems i plan to invest in a RO unit with DI. Its quite impossible for me to buy one locally cause the prices are really high (600-700$).

I searched online for RO units and prices are really variable. The brand Ted recommends in his superb article is quite expensive, as is the ones sold in Germany (which i often go).

Recently i read in a members post in the forum a brand called RO-Man from UK and their prices seem very cheap although their membranes seem of higher rejection rates (%97-99) they recommend 5micron sediment filters.. such a 4 stage filter costs less than 200$..

http://www.ro-man.com/shop/product_info.php/cPath/22/products_id/257

I got a friend coming over frm UK in a month or so and this is ridiculously cheap compared to the prices here. Any one got good or bad comments?

Thanks

 

[ed seeley]

I've got a 50gpd unit from them and it's superb. I'd definitely recommend them. Even the replacement pre-filters are well-priced.

 

[Mike Wise]

Looks good to me. Just be certain that it comes with the correct R/O membrane for your water. One type resists damage from chlorine in municipal water, while another is not (designed for personal non-chlorinated water wells).

 

[aquaticclarity]

Actually the CTA membrane NEEDS chlorine as it is an organic membrane and will start to grow bacteria and fall apart without the chlorine present in the source water.

Jeff

 

[beleg]

Thanks for all the input..

Jeff & Mike isn't the Active Carbon placed before the membrane a chlorine remover? All the R-O units I've seen place Active Carbon block/granules in front of the membrane to protect it from damage of Chlorine and other heavy metals...

 

[aquaticclarity]

The carbon is post membrane on a CTA unit. CTA's are less comon then TFC or Hi-S membranes. The CTA removal rate is around 70% where the TFC and Hi-S are in the mid 90's. The CTA is a less expensive choice compared to the other membranes, but you don't get the same quality of water either.

Jeff

 

[beleg]

And RO-Mans is which type? They claim to be in 90s.

 

[ed seeley]

All the RO man units are short leaf Thin Film Composite membranes. This is from the FAQ section on the website;
http://www.ro-man.com/faq-pro/index.php?action=article&cat_id=002&id=7&lang=

They really are quality units. Mine is nearly 5 years old now and the membrane is still going strong, but when I do have to replace it it will be with another one of theirs.

 

[beleg]

Cool. Thanks Ed. I'll be ordering a 75 or 100 gpd unit (although i don't need the capacity for now the price difference is unimportant) , 2-3 carbon replacements , 2-3 sediment replacements and 5 lt DI resin.