is 274.57 KB, has a resolution of 900x540 pixels and was uploaded on April 9, 2020 @ 1:54 am by user: annahaaas. It is filed under the tags: health, royal institution, john tyndall, silver, medicine. Click the blue button at the top to freely download: Silver Colloid Colloïdaal Zilver Tyndall Effect Liquid png.