Dene, as far as i am aware you wont have any problem using the mixed solution, especially micro splitters, after all spotters are all ready mixed!!!
obviously when first mixed with warm water the the cleaning effect is a little better although , i would say negligable, providing you aggitate sufficiently when using,
as for other chemicals, again most ok and im sure label advise would say if they had to be used immediatly, and if they dont they certainly should.
Geoff