vintage scientist adding a blue liquid to a test tube
Focused female scientist in coverall protection equipment doing scientific tests with smoking blue liquid. Blue liquid with reagent.
Selective focus shot of female scientist in protective mask and glasses pouring blue liquid in test tubes with pipette during microbiology experiment in laboratory
Scientist looking at liquid in test tube
Selective focus of blurred scientist in gloves, goggles and face mask looking at test tube with blue liquid, shaking it
medical scientist showing pink test tube to the camera wearing protection suit
close-up of scientist in protection mask and glasses holding two test tubes with samples of pink and blue colors
Medical chemist analyzing test tube with pink liquid in protective suit
Senior scientist in protective glasses and gloves using pipette for pouring blue liquid substance into test tubes while doing microbiology test in laboratory
Slowmo focus on hand taking test tube with blue liquid from test-tube holder in laboratory at daytime
Close up of scientist pouring blue acid into test tube. Close up of a pipette pouring liquid into a test tube. Performing a liquid at scientific laboratory.
Young Chemist Analyzing Test Tube with Pink Liquid in Protective Suit