CLEANING - Removal of oils, dirt and crap like that. If you don't do this before you sanitise then bugs can find a place to hide from the sanitiser.
SANITISING - Reducing unwanted micro-organisms to trace levels.
SODIUM METABISULPHITE is the preferred agent for sterilising equipment as it is cheaper. After cleaning your equipment you can sterilise by using one teaspoonful per 5 litres and soaking for 2 hours. The solution does not keep. Drain well, but do not rinse. * Do not use with Stainless Steel