https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14002505Edit ImageSaveSaveEditCropCustom TextA chemical laboratory with four chemists; one looks into a furnace. Engraving.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 833 px | 300 dpiLarge JPEG 3300 x 2292 px | 300 dpiFree DownloadA chemical laboratory with four chemists; one looks into a furnace. Engraving.More