Distilled water

[Bob-D659]

There is no chance in hell 1 gallon distilled water to cost 1$ unless You live on Mars or Jupiter

You haven't visited a Walmart in the USA have you. Yes triple distilled water is only $1 us dollar a gallon, and the commercial stills recover the heat from condensing to preheat the incoming cold water.

[fotch]

This is reverse osmosis product, a filtered water.
Boiled distilled water is completely different story, it takes lots of time and energy for the vapors to pass thru a serpent turbine, then the inorganic solvents are filtered thru charcoal.
With consumer grade distiller 600W, it takes around 5 hours to distill 1 gallon.
If You got a military grade distiller, like the ones used in submarines, You might do it in less time but it wont cost less.
There is no chance in hell 1 gallon distilled water to cost 1$ unless You live on Mars or Jupiter

Many stores in my area, Chicago, Milwaukee suburbs sell Distilled water for $1 or less. RA water, if doing a refill your own container, is 30 to 40 cents.

[Jim17x]

Im just south of Chicago and have never paid more than $1 per gallon.. I always pick some up for between .88 & .99 cents per gallon..

[georg16nik]

The main question is: Did any of You guys checked it in a lab?

[Bob-D659]

Yes, and it sure fails the tests for water for injection. But it is good distilled water.

[georg16nik]

Yes, and it sure fails the tests for water for injection. But it is good distilled water.

Yep, that's why in pharmacies is offered in glass ampules.

[Роберт]

Good question because the quality of destilled water can vary enormously. But this is the same with R.O. water. I am using Brita (TM) water which is enough filtered to get rid of all regular problems in photography and it is very suitable for use of "photo" water. One Maxtra filter can do about 80 ltrs. and it costs about Eur. 4,00. About Eur. 0,05 / ltr. and always available. The end quality also depends of the type of input water but here in Holland it is pretty good. In Ukraine it sometimes is a problem in a high amount of iron (rusty tubes).

[bdial]

Just curious, why is the moisture condensate collected by these dryers rather than just vented outside?

It allows more flexibility in locating the dryer, no access to an exterior wall is needed. Also, they don't send air you've paid to heat out of the house's conditioned envelope. These dryers are also much smaller than the typical "American" dryer.
We have a condensing dryer, though ours is rigged to pump the water into the washing machine's drain. Given the gunky wet lint that accumulates in the condenser, I don't think the water from it is something I'd consider for my film, but "mileage may vary".

As for distilled from the grocery store, it's labeled as distilled, and the label further states "purified by steam distillation". Sells for right around 1 USD per gallon/3.7 L around here, FWIW.

[georg16nik]

Good question because the quality of destilled water can vary enormously. But this is the same with R.O. water. I am using Brita (TM) water which is enough filtered to get rid of all regular problems in photography and it is very suitable for use of "photo" water. One Maxtra filter can do about 80 ltrs. and it costs about Eur. 4,00. About Eur. 0,05 / ltr. and always available. The end quality also depends of the type of input water but here in Holland it is pretty good. In Ukraine it sometimes is a problem in a high amount of iron (rusty tubes).

Sounds good to me!
Brita works ok but You still need to get rid of the dissolved oxygen.
The so called distilled water from Walmart should also be boiled to get rid of dissolved oxygen.

[DWThomas]

This is reverse osmosis product, a filtered water.
Boiled distilled water is completely different story, it takes lots of time and energy for the vapors to pass thru a serpent turbine, then the inorganic solvents are filtered thru charcoal. ...

The $1 stuff at my supermarket claims to be "steam distilled." Admittedly I don't have any handy way to truly verify that, but perhaps it's a byproduct of our typical (US) profligate energy use! It works for me.