Just thought I'd mention this as it's always worked for me. Tesco thin bleach at 35p for 2l. I mix 40ml to 23l of water in a FV (PH should be 7.5 - 8 if you have the means to test), sink my bottles and syphon tube etc. in it and leave for 30 mins. No rinse needed if you let the equipment dry or rinse to use straightaway. It's never failed. I use Isopropanol alcohol to sterilise and clean things like my hands and hydrometer before and after use, I also use this in my airlocks. Again cheap at around £15 for 5l and it has loads of uses: Remove permanent marker Removes labels Cleaning electrical circuit boards Mix with vaseline to make napalm (well a BBQ lighter) Anyone have any other cleaning/sterilising tips?