Idophor - Does it keep?

[SteveD]

I make up brupaks Idophor according to their recommended concentration:- 2.5ml/500ml water, which fills my plant sprayer nicely. The question is: does the solution have a 'shelf life' once put in the sprayer?

[UserDeleted]

It keeps very well. I use Betadine and have a Corny keg full that I use for sanitising. I push it from keg to keg using CO2 so that I have a keg full of CO2 when I want to fill it with beer.

The rule I use is "As long as its brown its effective"

[maxashton]

Betadine will keep for a while if its out of sunlight, and there's no minerals in the water. For most brits, this is pretty much going to be a show stopper.

Even then, most of the times i've mixed up a betadine solution its gone clear and lost its odor after about 24 hours.

[SteveD]

Cheers, chaps. So, if it looks good, smells good, by golly it IS good!

[johnmac]

It lasts for months in the fridge (apparently, the light goes off when you close the door)

[UserDeleted]

its gone clear and lost its odor after about 24 hours.

Blimey! My keg of Betadine has been in the shed for 6 months! Still brown and smelling of hospitals Must admit that its in the dark, cool and the water is very soft

[maxashton]

And in a corny, which has gotta shield it from nasties.

Perhaps the volume keeps it from deteriorating also. Perhaps it would be worth putting some in another corny, but just like a liter or something.