User talk:Pineappleinc

Hello, I'm Edgar181. I wanted to let you know that I undid one or more of your recent contributions to Chromatography because it did not appear constructive. If you would like to experiment, you can 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. Thanks! -- Ed (Edgar181) 19:49, 25 November 2013 (UTC)

Please do not add or change content without verifying it by citing a reliable source. Please review the guidelines at Citing sources and take this opportunity to add references to the article. Thank you. Materialscientist (talk) 04:23, 29 November 2013 (UTC)