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NATIONAL GEOGRAPHIC 40x-1280x Microscope with Smartphone holder

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Guides & Tips

FAQ - Frequently Asked Questions

For this application we recommend the BRESSER Erudit DLX 40-1000x microscope in combination with a USB camera, e.g. the BRESSER MikroCam 1.3 MP. This solution offers better image quality and flexibility than a simple LCD microscope.

If you want to identify bacteria, it is usually more useful to create a culture. Microscopes are generally only sufficient to determine whether the bacteria are, for example, spherical or rod-shaped.
The Barlow lens is already installed in the eyepiece tube on many devices. It can be pulled out at the upper ridge to use the zoom function.
Possible causes:
 
  • Sample too thick / unsuitable: Use thin samples or fixed smears.
  • No cover glass or incorrect thickness: Objectives are optimized for cover glasses.
  • Condenser incorrectly adjusted: Do not open the diaphragm too far – otherwise contrast will be low.
  • Magnification too high: Rule of thumb: maximum 1000 × objective aperture. Example: With a 40x objective with aperture 0.65, the limit is about 650x.

Product and safety instructions


Manufacturer: 
Bresser GmbH, Gutenbergstraße 2, 46414 Rhede

Contact: 
www.bresser.de


Warning notes
  • This item is not suitable for children under 3 years.
  • Keep packaging materials (plastic bags, rubber bands, etc.) and small parts away from children! There is a risk of suffocation!
  • This device contains electronic parts powered by a power source (batteries). Never leave children unsupervised when handling the device! It must only be used as described in the instructions, otherwise there is a RISK OF ELECTRICAL SHOCK!
  • Risk of material damage! Do not disassemble the device! In case of a defect, please contact your specialist dealer. They will contact the service center and may send the device for repair if necessary. Do not expose the device to temperatures above 60° C!
  • Batteries should not be in children's hands! Ensure the correct polarity when inserting the battery. Leaked or damaged batteries cause burns if they come into contact with the skin. Use appropriate protective gloves if necessary.
  • Sharp-edged and pointed tools are often used with this device. Therefore, store this device, as well as all accessories and tools, in a place inaccessible to children. There is a RISK OF INJURY!
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