Parts of a Microtome

Here I’m unpacking my new hand microtome and explaining the different parts. A hand microtome (or cylinder microtome) is a device used to make thin cuts of a specimen for microscopic observations. The video briefly illustrates the different parts of a hand microtome.

Staining Yogurt Bacteria

School microscopes are often not equipped with phase contrast optics, which would be suitable for viewing bacteria. It is possible to see bacteria also in regular bright field, but the results are better if they are stained. Yogurt bacteria are safe for the use in schools.

Observing Plasmolysis

Onion plasmolysis

It is possible to observe the plasmolysis of cells under the microscope. When salt water is added to onion cells, then the cells will lose water due to osmosis, this can be observed.