Laboratorian s měřením pipetou přidá reaktant kapalina v laboratoři. - Stock záběry a video

The laboratory assistant works in the laboratory with test-tubes and compares results of researches with document on the tablet.

The laboratory assistant works in the laboratory with test-tubes and compares results of researches with document on the tablet.

The laboratory assistant works in the laboratory with test-tubes.

The laboratory assistant works in the laboratory with test-tubes and marks test-tubes

The video footage consists of two plans. In the foreground a small boy comes to the table with the microscope and other laboratory devices and test tubes. The boy looks into the microscope views the sample and adjusts the microscope. In the second fr