Potassium metabisulfite?
 

How long can one store made up as a liquid? Seems like making up a standard
solution so that 1 oz equals a campden tablet would work well.

Potassium metabisulfite?
 

Crhoff wrote:
> How long can one store made up as a liquid? Seems like making up a standard
> solution so that 1 oz equals a campden tablet would work well.

Stock solutions only last a few months. You will want to make it
strong, like 5%, which is equilivant to 5 tablespoons per quart.

Potassium metabisulfite?
 

"Crhoff" > wrote in message
...
> How long can one store made up as a liquid? Seems like making up a
> standard solution so that 1 oz equals a campden tablet would work well.

I make mine a lot stronger than that - more like 220g/l. The stuff is very
reactive with air, so it needs to be stored in a nearly full, tightly sealed
bottle to retain its potency.

20 ml of this solution added to 60 gallons of wine bumps the free SO2 by 10
ppm.

Tom S
www.chateauburbank.com

Potassium metabisulfite?
 

I make up a 10% solution - about a liter at a time, and store in brown
chem bottles, tighly closed. Even at that, it appears that the solution
loses strength, so I refresh if older than a month or so - and either
sump or use the older for sanitizing solution.