https://joy.videvo.net/videvo_files/video/free/2019-03/large_watermarked/181004_10_LABORATORIES-SCIENCE_04_preview.mp4 Scientist Pouring Sample Into Beaker Close up of a scientist's hands pouring a pink liquid into a conical flask. 1080pchemicalchemistchemistryconicaldiscoveryexperimentflaskglassglasswarelablaboratoryresearchresearchersciencescientificscientist