Pozorovat reakci v baňce, takže tekuté jasnější protřepáním studenta chemie - Stock záběry a video

Female scientist holds flask with fuming substance, perfume manufacturer

Chemical laboratory scene: attractive young PhD student scientist observing the engine oil or honey in the glass tube.

Chemical laboratory scene: attractive young PhD student scientist observing the engine oil or honey in the glass tube.

Chemical laboratory scene: attractive young PhD student scientist observing the engine oil or honey in the glass tube.

Female scientist holds flask with fuming substance, perfume manufacturer

Researcher stirring bright blue liquid in conical flask, watching reaction

Lab assistant analyzing meat sample in preservative agent and writing results

Scientist analyzing blue transparent liquid in flask, water heavy metals checkup