If you are making the trip to advance chemicals get a litre of LABS acid too. 1 litre will last a lifetime. I keep phos acid and labs acid (10:1) in a squirter bottle and then I'm ready to go with any sanitising (a few teaspoons of this mix to a litre of water). Shake like buggery and let the foam do the work. Drain well but don't worry about the foam. I leave this mix in there until I am ready to use the vessel.johnno said:Thanks for the links to Advance Chemicals. Nice price on the phosphoric acid there. I will get some and save myself the rinsing.