Микроскопы и аксессуары

The components of a microscope

Principle

 While small items and living beings can be magnified by up to 15 times with a magnifying glass, it is necessary to use a light microscope to magnify by 40x to 400x, with particularly powerful microscopes even 1000x.

Benefits

• Experiment is part of a complete solution set ...

Working with the microscope

Principle

You should observe some basic rules of microscopy so you can make interesting observations as soon as possible.

Benefits

• Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
• With student worksheet, appropriate for all ...

Microscopic magnification

How small or big are the objects you see under the microscope? The following exercises shall help to illustrate the magnification of the microscope.

Preparation of temporary microscopic slides

• Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
• With student worksheet, appropriate for all class levels
• With detailed instructor information, incl. sample microscopy image
• Optimized for tight schedules, i.e. ...

Manual section technique

In light microscopy, we have to produce slides that are nearly transparent. This is possible by cutting the specimen in very thin sections. Then the light can shine through it and the internal structures will become visible.

Staining of living organisms

• Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
• With student worksheet, appropriate for all class levels
• With detailed instructor information, incl. sample microscopy image
• Optimized for tight schedules, i.e. ...

Rapid staining technique

The structures of particular components of organisms often do not display sufficient contrasts. In order to attain more contrast, the biologist applies staining techniques. A simple method to rapidly display nuclei in wet mounts consists in staining them with Methyl Green or carmine ...

Fixation and staining

Biological specimens are subject to alteration and rapidly show signs of decay once they are isolated from a living organism. If a relatively natural condition is to be retained, the proteins of the protoplasm must be turned into a "frozen state" or denatured. This process is ...

Embedding in Canada balsam

Principle

To make permanent microscopic slides, the specimens must be fully dehydrated and fixated, be very thin, and naturally sealed free of air. Natural resins such as Canada balm and malinol can be used to accomplish the exclusion of air. These materials solidify after drying up and become ...

Preparation of reagents

• Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
• With student worksheet, appropriate for all class levels
• With detailed instructor information, incl. sample microscopy image
• Optimized for tight schedules, i.e. ...

The cell wall of the onion

• Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
• With student worksheet, appropriate for all class levels
• With detailed instructor information, incl. sample microscopy image
• Optimized for tight schedules, i.e. ...

The cellular membrane of animal cells

The cell wall in plants has an important function: it gives the plant stability by supportive depositions. Animal cells do not need this support function because many animal species possess skeletons. Animal cells are separated from the exterior world only by means of a membrane. In ...

Chloroplasts in moss leaves

Principle
The characteristic feature of almost all plants is their green color. It comes from a pigment which is the catalyst of the most significant biochemical process on earth: photosynthesis. The name of this pigment is chlorophyll. Chlorophyll is not evenly distributed in a plant cell but ...

Nucleus and chromosomes

Principle

The nucleus is recognizable under the light microscope as a circular object. It can be seen even without previous staining. The nucleus is the control center of many cellular processes and harbors the hereditary information. The nucleus contains filamentous structures (chromatin) ...

Vacuole

• Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
• With student worksheet, appropriate for all class levels
• With detailed instructor information, incl. sample microscopy image
• Optimized for tight schedules, i.e. ...