A young scientist mixes chemicals in an erlenmeyer flask
A scientist in a lab mixing a red content in an erlenmeyers flask looks into camera and smiles
A scientist holding an erlenmeyers flask and puts some chemicals into it to test the water hardness
A young scientist examining a test tube with a colorful substance
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
A scientist in a laboratory taking some food examples and puts them into an Erlenmeyer flask for further tests
Scientist holding colorful flask in chemical laboratory
A women holding and mixing a flask with a chemical substance
Scientist holding colorful flask in chemical laboratory. Focus on the flask.
Woman in chemical laboratory holding a flask with blue and purple in it. Focus on the flask.
A man checking the hardness of the water in an erlenmeyers flask-the water is soft due to the blue color
Scientist holding a flask in chemical laboratory. Focus on the flask.