User talk:Hamdusf

November 2015
Hello, I'm Materialscientist. I wanted to let you know that I undid one or more of your recent contributions to Perchloric acid because it did not appear constructive. If you would like to experiment, please use the sandbox. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Materialscientist (talk) 22:15, 12 November 2015 (UTC)