Sulphuric acid’s role is that of a : extremely effective at destroying the toughest organic and mineral blockages, but unforgiving of mistakes. Unless you are an industrial maintenance professional or dealing with a drain clog that has resisted all other methods, leave the sulphuric acid to the factories. When in doubt, call a plumber.
Safety note: Always check your plumbing manufacturer’s guidelines before using any acid-based cleaner. Many modern plastic pipes (ABS, some PVC) can become brittle or melt from the heat generated. sulphuric acid cleaning
