A scientist adds some water into an erlenmeyer flask
Footage of testing the PH value of the water with an electric device
Laboratory glass Erlenmeyer conical flask filled with chemical white liquid for a chemistry experiment in a science research lab
Water purification test. Drop blue liquid in test tube with clean water. Scientist doing chemical experiment
A scientist holding two test tubes, the result of water hardness test, one good and one bad result
LABORATORY FLASK ELECTRICALLY STIRRED. 4K close-up with negative space.
Medium shot of blond female teacher in lab coat and curious schoolchildren looking at chemical reaction in classroom
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
Somebody pouring fresh water into an erlenmeyers flask
Chemist or medical research scientist adds fire to a violent chemical reaction. Chemical experience
Female scientist mixing chemicals in erlenmeyer flask
Footage of a scientist putting some drops into an Erlenmeyer flask...
Scientist doing chemical experiment, super slow motion, shot at 240fps
Practical chemical tests in school laboratory. Violent chemical reaction on a white background
A man checking the hardness of the water in an erlenmeyers flask-the water is soft due to the blue color
Chemist or medical research scientist adds chemicals to a flask for a violent chemical reaction
Chemical reaction in volumetric flask glass in laboratory. The chemical pink reagent in a transparent bottle. Chemical reaction
A crazy scientist looking at two test tubes and shouting at somebody...
A young scientist demonstrating water hardness tests, highlighting the benefits of soft water
LAB STIRRER BEGINS TO SPIN. 4K close up in HLG 10 bit, 4:2:2.
Time-lapse of a man checking the hardness of the water
LABORATORY BEAKER ELECTRICALLY STIRRED. 4K close-up with negative space.
Close up shot of a pink and a blue test tube, in a lab, being mixed by a scientist
A scientist indicating that a man who works in a lab must wear protection glasses...
Scientist checking erlenmeyer flask with chemicals and writing results
Chemist mixing chemicals in erlenmeyer flask, super slow motion
The closed flask are standing on a shelf
A scientist in a lab mixes an Erlenemeyer flask with some blue content in it
Flasks with different concentrations of liquid
A young scientist mixes chemicals in an erlenmeyer flask
A hand with blue medical gloves mixing some chemicals in a test tube
