Chemist pouring liquids in test tubes on table with pipette. Researcher dropping chemical liquid in test tubes. Close up of scientist hands working with chemical reagents at research laboratory
Scientists use sample pipettes for test tubes. For scientific water research
Scientists use sample pipettes for test tubes. For scientific water research
Scientist placing a red liquid sample with micro pipette into a test tubes.
Scientist placing a red liquid sample with micro pipette into a test tubes.
Closeup of unrecognizable gloved chemist mixing unrecognizable liquid substances in glass test tube with pipette, conducting research in lab
Close up of chemist filling test tube with liquid using pipette in equipped laboratory. Scientist analysing various bacteria, tissue and blood samples, pharmaceutical research for antibiotics
Pipette drop the sample into test tube
Pipette dropping sample into test tube
A pipette dropping sample into a test tube in lab
Close up handheld footage of chemist pouring solution with pipette in a reactive blue liquid. Test tubes with blue liquid.
Close up of scientist adding solution with pipette on smoking blue fluid in test tubes. Chemist in research lab.