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