User talk:176.202.40.224

February 2024
Hello, I'm User3749. I wanted to let you know that one or more of your recent contributions&#32;to Paper chromatography have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Teahouse or the Help desk. Thanks. User3749 (talk) 15:55, 20 February 2024 (UTC)