Test tube icon ExclusiveIcon by Stockio.com Test tube icon ExclusiveFreeIcon by Stockio.com Free Download ▾ SVG PNG 15x25 PNG 30x50 PNG 45x75 SVG PNG 15x25 PNG 30x50 PNG 45x75 License: Free for personal and commercial use, with attribution to Stockio.com. Not for sale or redistribution. Facebook Twitter lab scientific test tube analysis Colors: