Virkon S is not only a very efficient disinfectant, it's also very convenient for travelling.
You can get it in tablets or small powder packs (it's orange, so no risk to have problems at the airport with the customs...). Looks like Orange powder drinks (Tang or whatever it's called where you live)
......
So very light and handy to pack in your luggage.
As soon as it's diluted, it's still efficient for one week and you can clean your counterlungs and hoses several times.
Cheers