Most people use a traditional compound microscope at 400x to see individual stomata on plant leaves. It is possible to see stomata as small white dots on the underside of a leaf at magnifications from 50-100x, but you will not be able to do real stomatal counts, or see individual stomata.

If you want to take pictures of plant stomata we recommend the Celestron Digital Microscope Imagers (CS-DMI) or the ProScope 5MP Microscope Camera (BD-PS-MC5UW). But you will also need a traditional compound microscope.

It is possible to see fields of stomata on the underside of a leaf using the USB Digital Microscope (BD-EDU-100), but you will not be able to do stomatal counts and you will not be able to see the structure of each stomata.