For all you UK based brewers. I have found a very good deal for the Starsan replacement steriliser at The Malt Miller. https://www.themaltmiller.co.uk/product-category/chemicals/equipment-chemicals-sterilising/ They are selling 5 Litres for £39.99 + postage!!!!! Most sellers here are selling 1 Litre for around the £27 mark so this is a good deal. They also are doing deals on other volumes e.g. 1L for £12 so get in there quick as, at these prices, they will sell out soon. I have no connection to the company - I was looking for the best price for Chemsan and came across this - so I got a 5L bottle.