Scientist injecting chemicals into test tubes. Test tube of colored liquid on the lab table in the background of the glass flasks. poured from glass pipette into test tube illuminated with blue light
Scientist injecting chemicals into test tubes. Test tube of colored liquid on the lab table in the background of the glass flasks. poured from glass pipette into test tube illuminated with blue light
Scientist injecting chemicals into test tubes. Test tube of colored liquid on the lab table in the background of the glass flasks. poured from glass pipette into test tube illuminated with blue light
Scientist injecting chemicals into test tubes. Test tube of colored liquid on the lab table in the background of the glass flasks. poured from glass pipette into test tube illuminated with blue light
Scientist injecting chemicals into test tubes. Test tube of colored liquid on the lab table in the background of the glass flasks. poured from glass pipette into test tube illuminated with blue light
Scientist injecting chemicals into test tubes. Test tube of colored liquid on the lab table in the background of the glass flasks. poured from glass pipette into test tube illuminated with blue light
Selective focus of blurred scientist in gloves, goggles and face mask looking at test tube with blue liquid, taking sample with dropper from it
Pipette dropping sample into test tube
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
Scientist dropping chemical liquid in test tubes. Close up of scientist hands working with chemical reagents in laboratory glassware. Researcher put liquids in test tubes on table. Chemical research
Young chemist observing blue liquid in glass test tube