I know distilled is better, but why is it? Can anyone show me a graph or chart testing distilled vs RO?
I mean, why can't RO work?
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I know distilled is better, but why is it? Can anyone show me a graph or chart testing distilled vs RO?
I mean, why can't RO work?
How do you know?Quote:
I know distilled is better (...)
you already know its better, but dont know why its better...
so how do you know its better?
i honestly dont have a clue...
what makes one pure water better than the next?
I've used RO water in my loop before, no problem. Who says that RO can't be just as pure as distilled?
reverse osmosis is a mechanical attempt at deionised water by trying to get ions out of the water by passing it through a filter. True deionised water is obtained chemically. Distilled water is very pure but will still contain silica which cannot be removed by distilling.
Therefore distilled is probably better (or at least as good) as reverse osmosis but deionised will be the best. Although if you go adding solutions containing copper ions etc there is no point in the deionised :P
What If I were to use colloidial silver in my loop? Colloidal Silver
Distillation is a physical process (some say chemical, but chemistry is just a subset of physics anyways. No chemicals are involved (thats why I'd rather say physical). Water is separated from its other components via boiling. I've done this in countless chemistry labs although no chemicals are used, just heat.
Osmosis occurs when different concentrations of solvents occurs in a fluid like water and the water will "move around" to create a homogeneous solution or in other words have the same concentration throughout.
Reverse osmosis is a technique to pull solvents through a filter, such as activated carbon which is semipermeable and blah blah blah.
Anyways, I don't understand the question or rather, statement.
Distilled is better? For a cooling loop, there will be virtually NO difference in the heat absorption properties. In a medical lab setting, distilled water is never used, only DI water. Usually, a super mediquell (super b/c it works faster, NOT higher quality) filter is used to produce what is considered the purest water in the world. The only thing better would be to autoclave it. But anyways, I'm getting slightly :off:
The purity in a RO filter is limited by the size of the impurity it can filter as well as the type of filter, such as activated carbon. Distilled is not limited by particle size, only boiling point. If there are no other liquids in the water, just solvents, incredibly pure water can be extracted.
I'm guessing that the point of this topic is which is type of water is better for a cooling loop, right? I have a triple reverse osmosis filter at home, but I need to changed the activated carbon, so I'm going w/ distilled to be safe. I am also not sure how well cations and anions are removed (calcium, etc) via RO. I wouldn't see it as an issue. Nikhsub1 has done this...
Just stick with distilled, its a better guarantee that nothing bad will happen in your loop due to impurities. I'm saying this only b/c I've never seen just RO water for sale. I know that bottle waters have it in there, but who knows exactly what else is added.
If you can say what properties you want us to test, I'm sure someone can come up with a chart. RO vs Distilled? That can go on indefinitely. We need context man!
Ions are not removed that well from R/O systems. An R/O system coupled with a very fine de-ionization will get you very pure water.
Thats the ticket! too bad de-ionization methods are too costly for home use. :(
R/O water has varying grades of quality, and I'd bet that the source you are using isn't giving you any kind of data on the quality.
Distilled would be better probably to play it safe.
I've used 100% RO water in every loop I've ever done. Even after 3-4 months the water is coming out pretty much clear. So no problems here.
It would just help if those with experiences in it, would mention the source of the RO, lab grade?, store bought?, from a home RO filtration system?. That would just give a better idea of what folks are using successfully.
i think that would be asking for problems. in areas of low flow the colloidial silver may come out of suspension, may get problems with brass radiators etc..Quote:
Originally Posted by .Logic
A copper salt would be a better idea..such as pt nuke. A better idea again would be glutaraldehyde, a non ionic compound and very nasty to bacteria. As i said, there is very little point in buying deionised water if the 1st thing you do is chuck a bottle of an ionic salt in.
All this talk of making the water at home being expensive...why not just buy it? Deionised water costs buttons (free if you work in the right place ;).
reverse osmosis. Using a membrane with pores which trap impurities as a filter.Quote:
Originally Posted by DarkSephiroth
Distilled: mostly done though heating water to allow water vapor to rise and then get traped on a collection plate.
RO: unless your running a $100,000 nanopure machine which have fractional distillation process will not be acceptable in filtering some minerals in water. These minerals can be conductive, or lead to corrosion.
Distilled, since water vapor is collected, water is as pure as it can be. Some companies will use distillation b4 they put it under RO to ensure the water is purely clean.
Ive used RO from a BIOLAB. It was great stuff, but that machine was tested and calibrated to provide 99.99% pure water. I wouldnt recomend you using a RO unit from a house. Those arent as good as the biolab stuff.
ACK Synthetickiller beat me to it. In a biolab, you never use RO only. If the water has impurities, it can lead to nightmares in your results.
From my understandings of RO and Distilled (I used to work for bottled water company)...
In theory RO and Distilled are pretty much the same in the respects of which we are talking but...
RO is much harder to control the quality of the water coming out of it.
Distilled is pretty easy as it is just boiling and collecting the vapor.
So for how much it costs to go to the grocery store and buy distilled water I would go that route (unless you have a reliable source of known good RO water that is just as cheap or cheaper...)
Quote:
Originally Posted by largon
I don't, everyone recommends distilled over anything else so I'm assuming distilled is better. :confused:Quote:
Originally Posted by sergers
Also would drinking water (or bottle water) considers RO?
Bottled water is a bad idea because you have no idea what else has been added are what the QC is like. Distilled is a better option.Quote:
Originally Posted by DarkSephiroth
WTF? Carbon? Carbone is to remove organic volatile compounds, the RO membrane is just that a semipermeable membrane that only water molecules can fit through. On the inside core of the membrane the soluble compounds are concentrated as the H20 molecules are forced through via pressure differential, thats why most filters are flow through.Quote:
Originally Posted by Synthetickiller
The incoming water flows into the membrane core then continues on through a mega flow restricter as to raise the cell pressure yet let the now concentrated water solution to flow out as to stop the membrane from becoming saturated. This now pure water is allowed to flow to a expansion tank where it sits until needed, thats when it is routed through a Carbone filter.
A standard RO filter system goes as such: 5 micron carbon filter > 1 micron particle filter > RO Cell > Expansion tank > Carbon core, synthetic fibre jacket filter > Your tap.
Due to the fact the system operates purely on pressure deferential it tends to be very slow on the average 45 PSI water supply of the home.
- Deionized Water flows through a polymer ion exchange matrix that attracts and locks free ions, depending on the polymer it can be heated to revers this and recharge the polymer, a 1 micron pre-filter is highly recommended for these systems.
- Steam distillation is indeed mechanical, better controlled the temps purer the water, a properly controlled system achieves very good results usually more then one distillation cycle is required to get the best result, usually three but for medical injection grade 6 is the default count.
FYI distiling water is the exact same as alcohol, just the temps change. Make your self a good ol fassioned still and you can make all the distilled water your heart desires, just control your temps well and follow the old alcohol distilling methods and you'll get the purest water you can hope for!
A good lebwig condencer and a distilling flask from a chem store and your set! Or some 316ss tubing and a good pressur cooker!
I hear the purest/cleanest water as of now comes from thawn iceblocks of ice on iceland. Shouldn't cost you much to obtain some, prolly only a some 20 to 30 thousand us dollars for the expidition, crew and gear :p:
To be honest, you dont want to use DI water because it will try to pull ions out of your tubing/blocks/pump, thus degredating the materials.
Distilled and Reverse Osmosis (not from the RO machine you have at home) dont do this as they do not have their ions removed and therefore are pretty much equal as far as our needs go. If you have access to one and not the other, go with that one. Pretty simple IMO.
Type 1, 2, 3 purified water definitions:
http://www.genengnews.com/articles/c...id=1942&chid=3
One such system to show that Grade 1 can be produced by filtration only (yes produced by our company):
http://www.labwater.com/shopexd.asp?...us-u_Millipore
I have an RO pump that is capable of making pee into pure drinkable water, I used that :)
lolQuote:
Originally Posted by ABXG
I went to my local Ralphs and found that Mountain Dairy (or Maintain View) (yeah the milk company =P) had water that uses reverse osmosis and some other technique (can't recall what it is atm). I checked the other technique out on wikipedia and it seemed safe enough for a WC setup. I've been using this stuff for over a month now and no problems yet. However, I have drained / filled my loop like 2x in that time =D
I also have a jug of arrowhead distilled water w/o any other processes done. It costs like $2 USD more than the reverse osmosis stuff. I'm going to be using the arrowhead for my final filling of my loop just b/c I bought it and paid the extra $2 =P
A little OT, but I used half the water in my reverse osmosis container from Maintain Dairy. Obviously the outside air got into the container... is it still safe to use this water after "some time" as gone by? How about for distilled water? If i open up the arrowhead and use only like 1/10 of the water in there and a few months down the line wanted to use it the same arrowhead distilled water would it have gotten contaminated by the crap in the air?
Thanks.
It wont be as pure as when you got it, but for the most part, all that will happen is that the water will ionize whatever it can from the air that got in. Unless you plan to use it for cleaning your immersion lithography equipment, it should be fine.Quote:
Originally Posted by jinsean