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Where do you get phosphoric acid? The strongest conventionally available stuff is Limeaway and CLR and those are not strong enough for heavy calcium deposits.
by stevenwoo 9y ago
Where do you get phosphoric acid? The strongest conventionally available stuff is Limeaway and CLR and those are not strong enough for heavy calcium deposits. The strongest home stuff appears to be toilet bowl cleaners with diluted hydrochloric acid or hydrochloric acid for chlorinating pools.
- Symbiote 9y agoIt's from any supermarket in Denmark. This shows the whole shelf [1], which also has an acetic acid solution, ammonia solution, and sodium/potassium hydroxide for cleaning drains. And "cleaning benzene", whatever that's for. Most of the bottles are branded "BORUP", except the phosphoric acid, which is "KALK VÆK". I found a safety information sheet [2], which says the phosphoric acid solution contains 5-15% phosphoric acid. That's stronger than Limeaway. If I pour it on limescale deposits I can hear it fizz. The from-a-supermarket strong toilet bowl cleaner here (probably applies to most of the EU) contains "9% w/w -- 94 g/L HCl" [1] https://shop.rema1000.dk/husholdning/rengoring-og-kemisk-teknisk https://shop.rema1000.dk/husholdning/rengoring-og-kemisk-tek... [2] http://rema1000.dk/wp-content/uploads/2015/06/Kalk-V%C3%A6k-Kaffe-1-L_DK_v2-0-1.0.pdf http://rema1000.dk/wp-content/uploads/2015/06/Kalk-V%C3%A6k-...
- fulafel 9y agoMany disinfectants meant for cleaning brewing equipment contain it, you can order it from brewing equipment web shops.