Frank and GM thank you for this information about soulutions.
Is "absolut" a brand name of vodka or the term for pure alcohol?
I tried at length to obtain pure alcohol but it is prohibited to sell it in UK pharmacies. You can only get it in the UK if you "know someone".
So what is the best brand of alcohlol for me to buy to tip into my tub of purified water please?
And has anyone tried the charcoal method as I would prefer that - where would one obtain a good quality charcoal? And if one uses the charcoal method - suspending a piece in one's own tub of water, surely there's a problem once it's dispensed and the patient has the water for up to a month whithout any preservative in it. Is it OK if the patient keeps it refrigerated?