Ok I need the filters, but it is inconvenient to go to your shop, can you just add these on top of my fotile instead of me going to the shop and add it? is there any installation complication that I should know? Any other technical details to share?

Is it necessary to have an indoor filter if I already have an outdoor?

I work in with a plant-scale water system. We used to use the ion- exchange filtration system ie de-ionized water as explained by zheilwane. An ion-exchange system is always paired with a carbon filter; carbon filter although efficient in foreign contaminant filtration is a bug house which means it traps micro n micro breeds there. A microfilm is form n can be felt. Any filter when removed, the slimy feel that you get is a microbial film, which means there is a layer of micro contamination. Babies are sensirove to these n it causes skin irritation if the micro happens to be gram negative rod. A glass of water or any bottle water, when wash u feel the slimy feeling on the surface, thats a microbial growth, does not harm adults but those weak n young children n it is very bad for those with Lupus diseases.

Regardless of what filtration system it is always good to have the housing n filter clean. Backwash removes the contaminant but not the microbial.

We are now using a RO purified water system n we generates 100tons of purified water each day.

Zheilwane is right about the standard 44 n 61, it does not tell you about the quality of the product but merely the minimum compliance standard. Standard 44 n 61 is a general acceptable standard n all water filtration system must first meet that.

When buying a filter look for the mwchanism n component, not just on maintenance n backwash.. What sort of filter is used at what ratio.

Zheilwane, when i asked if there is anything else about 3m that i can read, these are the infomation that i was looking for

Can somebody compare the 3M, espring & diamond Vs price and practically for common household considering young kids & babies? I know they are different, but i just want to get the view and water quality at your area with what type is suitable

I told the espring salesman that I am not interested with his product nor his information because it lacks technical credibility and that I have chosen the 3M instead. But he kept sending me PM asking me to meet outside, and tell me why 3M is not good (instead of why espring is better) without any data...Then say I waste his time...what man! cannot answer my questions just tell me cheap cheap cheap.... I'm officially putting it here, if i see another PM, I will report it and post his name here..cannot harass me if i duwan to buy what....crazy fella

Amway good but their salesman are lazy... Sothey lose out.. Love their uv but so expensive n salesman is inexperience. If it wasnt for the current renovation expenditure.......

You can check. The stainless steel 300 series..meaning those 3XX are non magnetic and the 4xx series are magnetic. The chromium in your stainless steel is the one that creates a protective layer that prevents rusting and corrosion, but chromium exhibits magnetic properties. Nickel is another compound that strengthens the chromium’s protective layers and is present in the 3xx series. Nickel is does not have any magnetic properties because nickel actually alters the physical structure and removes the magnetic qualities.

So if you get yourself a strong magnet and it is attracted to your filter housing that shows that it is either the housing is of stainless steel 4xx series or it is not pure stainless steel. I doubt it is the 4xx series. The 4xx series is of steel and chromium minus the nickel.

Strong magnetic qualities = high chromium low alloy

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Added on July 20, 2012, 10:07 amForgot to say: stainless steel must be passivated otherwise it will corrode over time also..So maybe those housing were not passivated...mana tau..that's why its cheaper

This post has been edited by craftsnknots: Jul 20 2012, 10:07 AM

Ozak, you are right. So I survey here survey there, check this that then cut this for that. Then certain thing buy mid range instead of high end. So I'm still waiting to see which air con n fridge is more value for money right now n if I can use 2.5 aircon piping for 2hp air con so that I can upgrade.

If i buy 3m do I need to modify anything if I wanna change to espring or equivalent? Piping, tap n such?

They are called bacterias for a reason. It is not that they are not harmful, they are just less harmful to adults. But they could be harmful to babies and those of lupus diseases.

Gram-negative rod bacterias are harmful and can cause inflammation, but healthy adults like us have better immune system towards these bacterias than newborn babies (then again, we sterilized babies bottles and such so you dont see the effect). Coliforms are gram-negative rod bacterias commonly found in our JBA water. You can kill these bacterias with hot water above 82 degree C.

The Pseudomonas aeruginosa is another type of bacteria commonly found in Malaysian water. Also harmful to newborns, sick and weak, those with weak inmmune system.

You may or may not find this info in water filter sites mainly because these filter technology are designed elsewhere where water are all pre-treated before supplying to home unlike our good ol' pariah water supply.

If you do not have weaklings at home, i guess it is alright and for newborns, babies, toddlers, old and sick, Just boil it, it is fine with or without UV.

82C or 180F is sufficient to kill. and since we boil to 100C, we're good with just any filter filtering contaminants of 0.5micron.

carbon filter dont make your water taste like coffee or tea or burnt food..if you taste that means it is time to change your filter. carbon block filter and activated carbon filter are different. carbon block has larger surface area and therefore more efficient in filtering contaminants.

Whether activated carbon or carbon blocks, they are both activated. when they say activated carbons, it means that it comes in granular forms and carbon block is..well block. The carbon filters the contaminants which are nutrients for these microbes and because there are more crevices between the activated carbons and thus the turbulence of water passing through will not be sufficient to 'cleanse' during backwash compared to carbon blocks. General cleaning requires 1m/s velocity on smooth surface with the granular activated carbon, you would require a velocity higher than that.

On chlorine, the activated carbon reacts with chlorine and changes it to chloride ions and therefore you cannot taste it (at small concentration). Chloride ions is tasteless and odourless.

Not to say 'better have activated carbon' more like the most economic, widely used components for water filtration for home and industries. To filter you need activated carbon. To kill, you need UV...So if i have extra money to splurge, I'll get 3M for outdoor and Espring for indoor.

Also to point out that the NSF-42 bacteriostatic certification are intended to limit the heterotrophic bacteria in carbon filter effluent from potable water influent to increase or amplify (What 3M or other carbon block filters can do), as opposed to a water purification filter that is intended to purify micro-biologically unsafe water (what espring or any other with UV can do). As long as there is stagnant water, you will have growth just not bad enough to cause any adverse effect. The carbon is the used to remove impurities which would mean it traps them and it is the medium for growth, once those bacteria colonize on the carbon, merdeka already, it will start introducing more bacteria into the effluent, so must backwash, just how often I don’t know, depending on the carbon block inside those water filter.