close-up sequence showing a scientist mixing two clear liquids in a beaker in a demonstration of how nylon is made, uk. - 燒杯 個影片檔及 b 捲影像00:26
a chemistry students drains liquid into a beaker and the reaction causes it to change color. - 燒杯 個影片檔及 b 捲影像00:19
close-up view of laboratory glasswares and tubes with different liquids for scientific research and experiments. modern laboratory with blurred background - 燒杯 個影片檔及 b 捲影像00:10
close up hand removing dropper from bottle and adding drops to solution in beaker - 燒杯 個影片檔及 b 捲影像00:05
cu chemist holding blue liquid in pharmaceutical laboratory / auckland, new zealand - 燒杯 個影片檔及 b 捲影像00:11
scientist's hands transferring yellow liquid with pipette in a laboratory setting - 燒杯 個影片檔及 b 捲影像00:15
close-up of hands in gloves working carefully with chemical solutions in a scientific laboratory - 燒杯 個影片檔及 b 捲影像00:05醫學樣本
mixing liquids in experimental equipment in laboratory-themed studio / south korea - 燒杯 個影片檔及 b 捲影像00:32
scientists use pipette dropper samples to test tubes.to conduct scientific experiments 4k stock video - 燒杯 個影片檔及 b 捲影像00:05
science, sample and hands of person in laboratory for research, pharmacy and medical. vaccine, forensics and experiment with scientist and chemicals for results, analysis and healthcare drug trials - 燒杯 個影片檔及 b 捲影像00:13
cu man hands turning beaker in lab magnetic stirrer spins liquid creating funnel / toronto, ontario, canada - 燒杯 個影片檔及 b 捲影像00:05
slow motion shot of a laboratory beaker containing a red liquid being dropped and shattering on a hard surface. - 燒杯 個影片檔及 b 捲影像00:33
flame under beaker containing clear liquid, tilt up to student's hand swirling beaker with liquid, secondary school chemistry class, ireland; 1982 . - 燒杯 個影片檔及 b 捲影像00:15
beaker, mask and science with hand of person in laboratory for experiment, reaction or solution. chemistry, innovation or research and scientist in medical facility for pharmaceuticals development - 燒杯 個影片檔及 b 捲影像00:11女人
slow motion shot of blue dye being dropped into a laboratory glass beaker of water. - 燒杯 個影片檔及 b 捲影像00:35
cu scientist sanitizing vials and test tubes with fire for chemistry experiment, boxmeer, netherlands - 燒杯 個影片檔及 b 捲影像00:20
high angle medium shot fisheye technician pouring purple liquid from beaker to beaker while rotating back and forth - 燒杯 個影片檔及 b 捲影像00:23
close up hand holding beaker into which sample of milk is being dispensed with pipette - 燒杯 個影片檔及 b 捲影像00:03
[from esso marketing film "rubber goes synthetic"] chemist working in laboratory mixing liquids in beaker, esso logo on his lab coat / various shots... - 燒杯 個影片檔及 b 捲影像00:27第二次世界大戰
