How long can you keep VWP steriliser solution?

[Ron Bell]

If I make a batch of VWP steriliser, can I keep any unused solution and use it some weeks later? Or does it lose its effectiveness quickly - do I need to make up a new batch each time?

 

[Sneedhearn]

According to the FAQ's on the Malt Miller site it seems it can't be made up and stored... VWP FAQ's