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Close up shot of a hand putting some chemicals into an erlenmeyers flask to check the hardness of the water-the water is soft
A scientist holding an erlenmeyers flask and puts some chemicals into it to test the water hardness
A man checking the hardness of the water in an erlenmeyers flask-the water is soft due to the blue color
A scientist in a lab putting some chemicals into a test tube due to test the hardness of the water
A scientist putting some chemicals into an Erlenmeyer flask and mixes it...
A young handsome scientist showing the water hardness test tubes, he gestures how the soft water is good and the hard water is not...
A scientist adds some water into an erlenmeyer flask
A scientist in a lab mixing a red content in an erlenmeyers flask looks into camera and smiles
A man performing the water hardness test - the water is soft and good for use
A young handsome scientist puts some chemicals into an erlenmeyers flask with a blue content in it and mixes it
Footage of a scientist working in a lab.,she is taking some food samples and puts them into erlenmeyer flask for further quality check
Female scientist mixing chemicals in erlenmeyer flask
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