Beware "deionised" water

[YT2095]

the deionised water you can buy to top up car batteries is NOT!

it contains Chlorine at least

 

I know as I nearly lost 3 days work purifying Silver Nitrate

[Wookiee]

What about "distilled water" you get at Walmart?

Does that also have contaminants in it(ei. Chlorine, etc)?

 

Thanks,

-Randy

[Dak]

YT, can't you test the purity of water pretty easily by measuring its electrical resistance?

[YT2095]

well I`de sumise that this stuff Was distilled, and it says it`s for car batts and clothes irons so you don`t get limescale.

Chlorine is a battery killer too though.

 

I should have tested it 1`st to make 100% sure, but you buy a product in good faith.

 

so unless you buy it and test it yourself, there`s really no way of knowing

[DrDNA]

Lab water is a funny thing. Biologists always worry about BOD and some hardly think about resistivity. Chemists and EEs often worry about resistivity and may not give BOD a second thought. I know for a fact that many semiconductor mfg lines have great resistivity readings but there are critters growing in some of their lines due to dead legs in the loops. I've seen the water glow from the flourescent bacteria growing in it.

 

Being a biologist/chemist hybrid of sorts, I always worry about both BOD and resistivity. And I only trust water that comes out *my own* Millipore MilliQ system. I let it run until >18 Mohm and I know that it could be contaminated with waste products from little critters in the exit line, even though it has a 0.22 micron end filter, because that is outside the UV light/ion exchange/charcoal recirculation loop.

[YT2095]

that`s nice dear

 

however I would have just been happy if this crap didn`t have Cl2 in it!

[DrDNA]

Sorry.

What I meant by all that was. As you now know, a lot of the stuff you buy is probably shite.

[John Cuthber]

How would chlorine survive being deionised?

I think you have a case for complaint.

[grifter]

^ what he said, if the product isn't "as specified" then i hear the sound of compensation ! so long as it doesn't say "contains chlorine" anywhere,which i guess it doesn't......or you wouldn't have brought it..

[YT2095]

well I intend to buy another one and test it empirically, that way I can rule out contamination from maybe an airborne source in the chem stock room, there is a Very slight "Chemical" smell in there (as there is in all the chem stock rooms I`ve been in).

 

when I can entirely rule it out as a cause, then Yes, I shall be seeking legal advice.

 

I`m not interested in getting money for it, I probably wouldn`t anyway, BUT there will be an issue about sales to folks that buy it in good faith for their Car Batts!

 

Chlorine is a Battery killer.