Medium Vertical Of Young Chinese Postgraduate Student Looking At Purple Solution In Retort On Stand In Laboratory Checking For Reaction Or Residue Writing In Checklist On ClipboardÂ
Medium shot of young Chinese female researcher standing at table with retort on stand in laboratory, looking at purple solution, observing chemical reaction and filling out checklist on clipboard
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Medium vertical of Chinese female chemist in white coat, goggles, gloves adding reagent to chemical solution in vial, holding it up, checking for reaction or residue, while performing assay
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Medium footage of Chinese female scientist in white coat, goggles, gloves adding drops of reagent to chemical solution in vial, holding it up, checking for reaction or residue, while conducting tests
Interaction of an alkali solution with an acid solution. Neutralization reaction. The color of phenolphthalein disappears. A plan of the mountains
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Medium vertical shot of young Chinese female diagnostic laboratory worker in goggles, white coat and gloves holding up flask with solution, stirring, checking for residue, while performing tests
Mixing of alkali and phenolphthalein solution, chemical reaction. The test tube is close-up
Abstract visualization of chemical reaction. Motion. Mixed solutions creating spreading stains.
Abstract visualization of chemical reaction. Motion. Mixed solutions creating spreading stains.
Adding solution into flasks with blue mixtures in stand close-up. Modern laboratory concept. Chemistry reaction and experiments, chemical researching.
Chemical reaction. Stock footage. Small test tubes are tested with special solutions that boil.
Chemical reaction. Stock footage. Small test tubes are tested with special solutions that boil.
Abstract monochrome background with the chemical reaction. Motion. Mixed solutions creating spreading stains.