Sodium Thiosulphate

[MarkMayf]

Does anyone use this to dechlorinate their water?

I have enough of the stuff to dechlorinate a few million litres of water, left over from my fishkeeping days.

I appreciate it does nothing for chloramines, but this isn't a problem with my water supply.

Thank you

 

[Dutto]

I didn't even know it existed before this Post but I am very impressed with the write up here ...

https://en.wikipedia.org/wiki/Sodium_thiosulfate

... and the fact that it is available here ...

https://www.amazon.co.uk/dp/B00BHZVZ6A/?tag=skimlinks_replacement-20

It looks to be a perfect way to remove chlorine for brewing so I see no reason not to use it.

At the moment I pass all of my brewing water through one of these ...

https://www.amazon.co.uk/dp/B005CAZDBY/?tag=skimlinks_replacement-20

... but I will keep Sodium Thiosulphate in mind for the future.

Many thanks. :thumb:

 

[MarkMayf]

No probs :thumb:

If you did buy 500g, it would go a looong way.

I made the crystals into a 12% solution, for use in my aquarium. Half a cap full dechlorinated my 300 litre tank. One drop is enough for a 20 litre bucket. (I actually tested it with swimming pool chlorine test strips).

Make up the 500g into a gallon or so of solution, that's a lot of brewing liquor you can treat!

You can't really overdose it either. Within reason.

 

[HebridesRob]

I use Sodium Metabisulphite, which is supposed to remove chloramines as well. No idea if it's necessary but it's easy to do and cheap.
https://www.morebeer.com/articles/removing_chloramines_from_water

 

[Budgie]

I'd never heard of it before either, but I can't use campden tablets as I'm allergic to sodium metabisulfite. This might just be the answer, cheers for the heads up. :thumb:

 

[Simonh82]

Sodium metabisulphite is the chemical in a campden tablet. Sodium Thiosulphate is commonly used for swimming pool dechlorination but i've only used it as a fixer for photographic film developing.

With any of these chemicals I would make sure that they are OK for food usage. Campden tablets are sold for that purpose so should be free of impurities.

Chemicals sold for other purposes may not be as pure and can contain high levels of things like heavy metals. I'm not saying this is definitely the case here, just that I would advise caution.