What is the minimum nsf certification needed to say that this filtration system is save to drink?

It doesn't work that way, unfortunately. Do not forget that NSF is USA standard, if system is not selling in USA, chances are it will not have NSF. Many very expensive German systems do not have NSF.

On the other hand, in USA, most systems have NSF 42, either at system or component level (meaning all components are NSF, but system itself doesn't have a certificate with it's name).

And then there is California... They do not accept or respect NSF, they have their own standards and their certification is bloody expensive. So once a company does certify in California, then they can go ahead and get NSF 53 at the same time, for example.

Rather than looking for NSF, look for what filter is able to do. Example, 3M Easy Complete and Aquasana are NSF from top to bottom, but they cannot remove bacteria, so technically still not safe to drink directly.


Yes, there are quality cheaper filters in 800-1200 range. But 800 is probably minimum for direct drinking water filter. Can have slightly cheaper one to remove taste, odor, chlorine, VOCs etc, but then still must boil.

Hi..can share where is your office? looking for water filter for my condo also..need some advise

Quality filters last for about 1 year and do not require any service. The only reason there is "service" is to change those rather weak inline filters and try to justify 5-6k charge for the purifier

https://www.lazada.com.my/products/shopnsav...1367Rkjcpv&mp=1

Bro, are Omnipure and Dow made in USA?

Omnupure is rarely replicated. Dow are very often fakes. Seller says that Omnipure is 100% original, but doesnt say anything about Dow. But judging from the price, it better be real at 300RM. Consider that Dow membrane is 1/2 price of this package. Also, these are in-line filters, they require fittings on both sides, unless you already have them.

This post has been edited by hestati: Jul 2 2018, 05:49 PM

I want to change my Elken bio pure S-250 RO cartridges. The prices for the original are quite pricy at
RM577 for 4 cartridges. Sediment + carbon + RO + carbon. Looking for cheaper alternative replacement.

This set, if it is real, will outperform original Elken, so good choice!

I am using Elken Bio Pure Ken2. I was told that not all cartridges need to change yearly. Some every 2 - 3 years.

Elken replacement filters are costly. I am wondering if I can re-purpose it as water dispenser to use together with other water filter system such as Aquaphor Crystal Eco.

This post has been edited by iamoracle: Jul 3 2018, 01:58 PM

You only need to change the sediment and carbon cartridges once a year. The original bio pure RO membrane is the most expensive one (RM321) but can last several years. If you change only the sediment and carbon cartridges, the RC cost is cheaper than Aquaphor's RC. Compatible Omnipure sediment/carbon cartridges are about RM60 per pc.
Yes I think you can use it as hot cold water dispenser by connecting it to Aquaphor.

You should be able to. Please send me the picture of dispenser connector and I will confirm. Normally not an issue to get rid of original filters and connect any other system, just want to check if it is 1/4 or 3/8

This is my elken bio pure s-250. I think it's 1/4.

Yes, looks like 1/4. Omnipure will definitely be an upgrade. Desal membranes used to be made by GE, but seems like GE sold that division and not sure if they make these membranes in USA anymore, other filters are made in China. So just buy Omnipure+Dow, you will not regret, 100% USA made product (if not fake of course)

Do you have know any reliable source of authentic Dow RO membrane cartridge?

In Malaysia, I don't really know, if you have requested this before, I could have brought it with the last shipment.

I am not saying this seller is not selling real stuff, maybe it is real. According to the price, it must be authentic, unless their supplier sold them fake. For example, Lazada is full of fake Doulton ceramic filters, but you can spot them by looking at the price, when it costs 1/3 of dealer price you know something gotta be wrong.

shop in Ipoh sells original Doulton filters - huanch@gmail.com
Mr Huan Chee Ho

Exactly like what aeiou228 has shared.

Got sellers in Lazada selling Omnipure filter cartridge. Not sure whether are they authentic or not.

Like we discussed above, Omnipure is 99.9% authentic. Dow, not sure.

As for the dispenser, you could connect Aquaphor or FD to it no issue, or can try to upgrade to Omnipure.

BTW, this GE membrane you guys have in there, what is nominal GPD on it, is it 50?

if the filter cannot remove bacteria, no boil cannot drink?