cliparts/5/4/0/0/clipart-lab-icon-4-5400.svg image/svg+xml Open Clip Art Library Lab icon 4 2009-03-20T14:11:31 http://openclipart.org/detail/22632/lab-icon-4-by-pitr pitr chemistry chemistry clip art clipart icon icon image laboratory laboratory media png public domain science science svg test tube test tube