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Chemical laboratory. Close up hands of a scientist titrating solution. The indicator changing color. Then he putting the funnel into the flask and place it on the heating device
Top view. Chemical analysis laboratory. Close up hands of the scientist putting the funnel in the flask standing on the heating device
Chemical laboratory. Close up hands of a scientist titrating solution. The indicator changing color
Scientist in gloves conducts ph-ray research in microbiology lab
Scientist holding conical flask with clear liquid in laboratory closeup
laboratory equipped for modern  scientific research
Scientist teaching chemistry experiment online in laboratory. Wearing lab coat and glove. Education and technology, social distance concept. Transfer pH buffer into test tube by using micropipette

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1012965635
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素材 影片 編號: 1012965635

Chemical laboratory. Close up hands of the scientist chemist pouring solution into flasks, then dropping a indicator to flasks with a solution.

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