Does anyone know how long star san remains an effective sanitizer after it's been mixed up with water? We use a lot of small batches for sanitizing hydometers, spoons, etc and it would save money to just keep a batch of star san mixed up in a pitcher or something and reuse it for these things. But will it still work after a few days/weeks/months, or does it need to be freshly mixed up?
i mix mine with distilled water and store in a 2 litre glass jug.
it has been good for at least a month.
if it starts to go cloudy it is losing effectiveness but you can add more concentrate to reactivate
beer, wine, cheese in various stages of production