I agree that RO system is not cheap. The cheapest in the Malaysian market that I've seen priced around RM2000.

Usually a non-RO water purifier company will tell you that their system can filter harmful contaminants and retain good minerals in the water. This is only half truth.

Chemicals are generally categorized into organic chemical or inorganic chemical. To know which chemical is organic or inorganic, you can Google the name of the chemical and if the chemical structure has a carbon atom or 'C' in it, then it's an organic chemical.

Good minerals are in the form of inorganic chemical. If a water purifier system allows good minerals to bypass, logically it also allows other inorganic contaminants to bypass. Most of the system in the market I've seen which allow good minerals to bypass are activated carbon filter. Organic contaminants contain carbon molecules which can bond to the activated carbon filter. A well designed activated carbon filter can filter organic chemicals and some inorganic chemical such as chlorine, lead and mercury. The disadvantage of activated carbon filter is it's not effective in removing most inorganic contaminants such as arsenic, nitrate, or heavy metals like chromium and cadmium. RO membrane can filter these inorganic contaminants. Most RO system also have pre- and post-activated carbon filter to filter organic contaminants. So a well designed RO system can filter both organic and inorganic contaminants.

There is no filter in the market which can differentiate between good minerals and bad minerals. This is a marketing gimmick. If the filter can retain good minerals in the water, chances are it also retains other inorganic chemicals in the water.

I do not deny the fact that some minerals in the water are essential to our health such as calcium and magnesium. Individuals who does not maintain a healthy diet can benefit from the calcium and magnesium content in the water to prevent certain illnesses. For those who drink RO water, the lack of minerals in the water can be supplemented from food intake. http://www.iwawaterwiki.org/xwiki/bin/view...les/RO_Minerals

Between a choice of drinking filtered water containing good minerals plus inorganic contaminants, or RO water which doesn't contain organic and inorganic contaminants while lacking good minerals, I personally choose RO water and supplement the minerals from food and nutrient supplement intake. A glass of milk contains more calcium than a glass of water.

The are some precautions on drinking RO water though:
1) Don't fill RO water in plastic bottle because of leaching effect. It's best to fill RO water in glass or stainless steel bottle.
2) It's not recommended to drink RO water immediately after exercise. Better drink 100plus to replenish the salt lost through sweats.
3) Maintain a healthy diet or take nutrient supplements if you're to drink RO water.

Too troublesome. And the fact that you need to take nutrient supplement shows it's not the most healthy of water to take.

Then there is the issue of not knowing when to replace the membrane otherwise the membrane will be a perfect bed for bacteria to grow. I prefer an unit that has some sort of measuring meter to inform me when the filter need changing.

As to what can be filtered, just go check it out at National Sanitation Foundation website to see what could be filtered.

My 2 sen.

I agree that having to fill RO water in glass bottle and taking nutrient supplements daily is too troublesome for some people. But it soon become an acquired habit and 2nd nature to me.

A filtered water containing both good minerals and potentially harmful inorganic contaminants is not the most healthy of water to take either. Anyway there are pros and cons in different types of water filtration system, including RO system. It all comes down to personal preference.

Regarding the measuring meter to inform the consumer on when to change the filter, I know the eSpring has this technology. It's a pretty smart technology. However, I consider this technology to be secondary to the ability of a system to filter contaminants from water.

Both Elken and Coway have after sales service to help remind customer of the need to change the filter. So this is not an issue, unless you buy RO system from other brand or DIY type. Still even if it's DIY type, you can always make a reminder on your smartphone everytime you changed the filters. So not really a big issue for me.

I agree that NSF certification is important, or at least a WQA certification and check the website to see what could be filtered.

How do they do that? AFAIK, filter are certified to filter x litres of water. Sure a family of 10 uses up x litre faster than a family of 2 person. So how do they know how much water had been filtered? Without knowing, there is no way these sales service can know when need changing?

i used to be an elken distributor.... what i understand is the usage of water for our body is purely for detox of our kidney... thats why RO is still the best..... other water filter brands marketing strategy is minerals..... actually until now... we cannot deremine the type of minerals in water whether its absorp by our body or not especially when water has gone thru underground pipes.... do we really know how is the condition of the underground pipes that has been used to pipe water to our homes???

most minerals contained in water are non absorbant to our body..... thats why people have to go back to understanding the basis of water for our body..... its to flush out our kidney........ as for minerals can be taken from food and supplements... not water.... mineral karat je yg byk dlm water....

so far i think elken and coway has the best RO system........

Just to share.. electrolysis is not suitable to test water..

http://www.youtube.com/watch?v=axSkJa6IGes

http://www.wqa.org/pdf/Consumer%20Briefs/P...ion%20Tests.pdf

This post has been edited by safwanuar: Aug 15 2013, 05:52 PM

So which water filter system is good and can remove fluoride?

coway
7 years d
i'm still alive..
no problem

Hi everyone!!

I'm Sam. I'm one of Elken members. If you are interested to be an Elken member then fill in the online form below :

http://www.elken4u.com/eRegistration.php?LYN=000200054465

If you want to know more about Elken then you need to click on this website : http://www.elken4u.com/index.php?LYN=000200054465

Please contact me at sham159@yahoo.com if you have inquiries and questions.

Thank you.

Hello,

I been using Elken Bio Pure for 1 year. Now I question the health benefits of RO water. If anybody interested to buy my water filter fairly cheap pls PM or drop a note soolgaso@gmail.com.
It's in great condition, 1 year old, will service it before selling.

Hi,

I am an agent of Coway.

I would like to highlight a few benefits on purchasing Coway water filtration system.

Coway allows you to purchase the water filtration system on a hire purchase basis, where you will enjoy the following benefits:-

1) Free service for every two months for five years.

2) Free filter change for every six months for five years.

3) Free spare parts & maintenance for five years.

4) Free installation of the water filtration system.

5) Free re-installation of the water filtration at other place once a year.

6) Direct piping to the water filtration system.

7) Up to four types of water i.e hot, warm, cool and ambience water.

THERE ARE A LOT MORE! Kindly contact me Azhar at kencanaputih@gmail.com for details.

Coway adalah penapis air no 1 malaysia dan paling terbaiknsebab jaminan warranty 5 tahun juga servis 2 bulan sekali secara percuma

Boleh lihat kehebatan Coway di web saya www.rahsiafirdaus.com

Sebarang pertanyaan hubungi Firdaus 016-4650338

Elken, yes. Ro water.
Amway, no. Not ro water.

Siap boleh advertise lagi...

Amway ada counter.

Ini mesti kerja aircond ni.
No kerja hard labour one. Correct?

How about nesh? I used it 20+ years so far.

im using coway

u nak business...pergi garage sales cari

bukan necro tered yg telah berusia 4 tahun

Coway bestest. After sales maintenance service toppest