Lab doctor pouring transparent liquid in lab flask with pipette. Medical research in laboratory. Clinical trial in medical lab. Close up of lab worker pouring chemical liquid in flask
Water purification test. Drop blue liquid in test tube with clean water. Scientist doing chemical experiment
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Vertical video: Picking test tube teacher in lab coat guiding goggled kids in lab reacting to touch
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Vertical video: Picking green test tube in lab girl in turquoise dress checking red flask for study
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Vertical video: Starting lesson teacher in lab coat pointing at students at school, holding tablet
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Vertical video: Lifting flask teacher in labcoat showing kids green liquid with test tubes in lab
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Vertical video: Cradling flask woman in lab coat lifting turning checking green liquid at bench
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Vertical video: Using pipette, student adding green liquid into tubes at school to observe reaction
African American teacher lifting flask pointing to rack at lab bench teaching pupil testing
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Vertical video: Reaching girl in mint tee with goggles stirring green gel in tray, boy doing lab
Laboratory glass Erlenmeyer conical flask filled with chemical white liquid for a chemistry experiment in a science research lab
A scientist in a lab mixing a red content in an erlenmeyers flask looks into camera and smiles
A scientist adds some water into an erlenmeyer flask
Footage of testing the PH value of the water with an electric device
African American instructor and child after prompt in lab, pouring green liquid between test tubes
Female scientist pouring chemical reagent in lab flask. Closeup of woman scientist doing chemical reaction. Lab technician doing laboratory testing. Scientist hands doing laboratory research
Female teacher showing to female youth at lab bench, reaching, arranging green test tubes in rack
Female child in teal top following tablet guide, pouring orange tube into flask at lab bench
African teen girl following tablet goggles-on drawing orange flask with pipette into rack at school
Kid is pouring green liquid into cylinder after placing beaker in tray on bench observing reaction
Vertical video: Hispanic boy placing flask on desk, wearing goggles and studying fizz, copy space
A scientist putting some drops into an erlenmeyer flask
Somebody pouring fresh water into an erlenmeyers flask
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Scientist pouring clear liquid into erlenmeyer flask in a laboratory during a chemical experiment and analysis for research
Classmates watching camera shifting, teenage girl pipetting green liquid into tubes for school lab
Teen female raising test tubes comparing colors pouring pipetting at lab bench using tablet
African female youth in goggles turquoise dress checking and pouring orange flask into beaker for
Teacher with children wearing goggles starting pipette dropping green into tube at bench teaching
African American woman teacher holding green flask raising, turning while teaching children in lab
A man performing the water hardness test - the water is soft and good for use
Instructor with pupils in goggles showing and pouring green liquid with pipette into flask at bench
African American child goggles reaching pipette, filling orange drops into test tubes in school lab
African American teacher in lab coat and five teens pouring green liquid into test tubes, teaching
Science instructor at bench holding green flask lowering stepping left teaching two youth students
Diverse teacher raising green test tube, guiding students wearing goggles toward rack
African Youth female following tablet pouring red test tube into flask with tongs at kitchen lab
Curious student is reaching selecting blue test tube from rack donning goggles and examining liquid
African American teacher in lab coat teaching elementary students at bench, lifting green test-tube
Scientist doing chemical experiment, super slow motion, shot at 240fps
LABORATORY FLASK ELECTRICALLY STIRRED. 4K close-up with negative space.
A man checking the hardness of the water in an erlenmeyers flask-the water is soft due to the blue color
Scientist conducting chemical experiment
Chemist or medical research scientist adds chemicals to a flask for a violent chemical reaction
Chemist or medical research scientist adds fire to a violent chemical reaction. Chemical experience
A scientist in a lab putting some chemicals into a test tube due to test the hardness of the water
Chemist mixing chemicals in erlenmeyer flask HD
Close up shot of a hand holding and mixing a test tube with red chemical in it
Chemical reaction in volumetric flask glass in laboratory. The chemical pink reagent in a transparent bottle. Chemical reaction
