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NATIONAL GEOGRAPHIC Stereo Microscope

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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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Accessories

BRESSER MikrOkular Full HD eyepiece camera
Save pictures and videos from your microscope or telescope directly in Full HD resolution on your PC. The BRESSER MikrOkular Full HD is an eyepiece camera that can be used directly instead of the eyepiece of your telescope or microscope. Adapters for various devices (all common eyepiece dimensions from different manufacturers) and multilingual recording software for Windows are already included in the scope of delivery. With this camera you can document your microscope or telescope observation or share it with others. Ideal for hobby, school, study and work. The camera can take pictures of the moon and the bright planets on the telescope. In microscopy, the camera is mainly used for shooting in brightfield and incident light. FEATURESmetal housing, mini USB socketresolution 1920 x 1080 Pixel, Full HDPixel size: 3x3 µm, sensor size: 5.86 x 3.28 mm23,2mm barrel, integrated UV/IR blocking filter30mm; 30,5mm adapter for various microscopes and telescopes included31,7mm (1,25") adapter for telescopes includes with thread for 1,25" filtersmultilingual recording software for Windowsimage format jpg, tif, pngvideo format mp4 SYSTEM REQUIREMENTSWindows 10 or 11Intel i3, i5, i7 or i9 CPU from the 2nd generation orAMD FX or Ryzen CPUinternet connection for software downloadUSB 2.0 SCOPE OF DELIVERYcamera module incl. dust capUSB-cableCamLabLite-Software as a download link, language versions German, English, French, Turkish, Russian, Polish, Indonesian, ChineseUsers Guide included in the software (German, English)Adapters 30mm, 30,5mm, 31,7mm (1,25”)

Available

£64.99*
BRESSER prepared slides, high quality, set of 10
This set contains especially well made, thin preparations, nicely colored and with very fine detail. The use of high quality sample material makes them very useful in school or for amateur microscopists. They are a real joy to look at!The set contains the following slides:DiatomsVolvoxZea Mays Stem c.s.Mouth SmearHuman Sperm SmearMitosis of Animal CellOnion Root TipsFly HeadLily AntherTomato leaf. c.s.

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BRESSER Prepared Slides 100 pcs. Box
Permanent preparations are ready made conserved preparations. For high contrast the most of them are stained.The prepared slides are marked with english and german descriptions. Includes:Three Types of Bacteria Penicillium,W.M. Aspergillus,W.M. Rhizopus,W.M. Actinomyces,W.M. Chlamydomonas,W.M. Diatoms,W.M. Stellato-Pilosus W.M. Spirogyra,W.M. Spirogyra Conjugation, W.M. Lichenrons Ox, Sec Fern Leaf, Sec Fern Prothallium,W.M. Leaf of Winther Jasmine,C.S. Elodes Stem, C.S. Elodes Leaf,C.S. Pine Leaf, C.S. Pinus Male Strobile,L.S. Pinus Female Strobile L.S. Rubber Tree Leaf,C.S. Corn Root Tip,L.S. Vicia Faba Young Root C.S. Corn Stem, C.S. Corn Stem, L.S. Cucurbita Stem, C.S. Cucurbita Stem, L.S. Helianthus Stem,C.S. Moss Antheridia L.S. Moss Archegonia,L.S. Moss Protonemata W.M. Basswood Stem C.S. Basswood Stem L.S. Pelargonium Stem C.S. Vicia Dicot Leaf W.M. Pollen Germination W.M. Pollen W.M. Tomato Fruit Sec Cymbidium Aerial Root C.S. Mitosis Onion Root Tip Cells Corn Seed With Endosperm L.S. Plasmodesma Sec Lily Ovary C.S. Lily Anther C.S. Lily Leaf C.S. Capsella Old Embryo Sec Capsella Young Embryo Sec Allium Scale Epidermis,W.M. Euglena W.M. Paramecium W.M. Hydra W.M. Hydra L.S. Planaria, C.S. Schistosoma Male W.M. Schistosoma Female, W.M. Ascaris Egg W.M. Earthworm W.M. Snake Skin, W.M. Daphnia Sp W.M. Rotifer W.M. Mosquito Female Mouth Parts W.M. Honey Bee Mouth parts, W.M. Honey Bee Hind Leg, W.M. Butterfly Mouth Parts W.M. Musca Mouth Parts, W.M. Grasshopper Mouth Parts W.M. Ant W.M. Fish Scale W.M. Planaria C.S. Trachea Clam Gill C.S. Blood Smear Human Blood Smear Fish Ciliated Epithelium Sec Simple Flat Epthelium W.M. Stratified Flat Epthelium W.M. Mitosis Horse Ascaris Eggs Small Intestine, C.S. Dense Bone Sec Tendon Dog Sec Loose Connective Tissue, W.M. Skeletal Muscle L.S,C.S. Cardiac Muscle Sec Spinal Cord C.S. Motor Neurous W.M Smooth Muscle Teased Preparation W.M. Lungs Sec Stomach Sec Liver Sec Lymph Node Sec Lung With Blood Vessels Injected Rat Kidney With Blood Vessels Injected Rat Sec Kidney Rat L.S. Testis Sec Ovary Cat Sec Squamous Epithelium Smear DNA RNA Pancreas Gland, Sec Frog Egg Sec Human Chromosome (Male) Human Chromosome (Female)SCOPE OF DELIVERY100x prepared slidesDurable plastic box

Currently unavailable

£122.99*
BRESSER Object plate glass (50 mm)
Object plate out of glass, compatible with BRESSER junior 20x/50x microscope, item 8852001.

Available

£9.99*
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NATIONAL GEOGRAPHIC Mikroscope-Set 40x-1024x USB (incl. Case and USB eyepiece)
This incident/transmitted light microscope is the ideal choice for entering the world of microscopy. Exclusive accessories such as dissecting instruments, transport case and an electronic eyepiece are already included. With a magnification of 40x-1024x, it is also suitable for school or hobby use.  FEATURESBeginner's microscopeIncident and transmitted lightMagnification: 40-1024xUSB eyepiece: resolution 640x480 pixelsTransport case SYSTEM REQUIREMENTSWindows 10 or 11Intel i3, i5, i7 or i9 CPU from the 2nd generation orAMD FX or Ryzen CPUOptical Disk Drive or internet connection for software downloadUSB 2.0 SCOPE OF DELIVERYMicroscopeObjectives: 4x, 10x, 40xEyepieces: 10x, 16x1.6x barlow lensColor filter wheel with aperturesMicroscope utensils (tweezers, pipette)5 Slides, 20 cover glasses5 PreparationsYeast, sea salt, Brine shrimp eggs, Gum media, Hatchery, MicrocutUSB eyepiece with softwareDust coverTransport caseInstruction manual

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BRESSER Researcher LCD Microscope
A digital microscope easily brings the microcosmos up on the screen. For a long time, these instruments were common only in the beginner's range. Now, the successful and proven Researcher series makes the step into the digital microscopy world and offers new options for microscopy in schools, for hobby or work. The optics and mechanics is the same as already well estabished in the Researcher Bino and Researcher Trino microscopes. Incuding 4 DIN objectives, Abbe condenser, coaxial fine focus and crosstable, the Researcher LCD is suitable for use in the microscopy hobby as well as in teaching or other work related applications. The highest magnification when using the 60x objective (compares to 600x on non digital microscopes) is high enough to view small microorganisms as microalgae, flagellates and bacteria. Other magnifications (20x, 100x oil) can be added later. The Researcher LCD is also compatible with our plan-achromatic objectives designed for 160mm optical tube length.The integrated, modern Sony camerasensor IMX206 with 16MP gives a brilliant image with good contrast on the monitor. The user can change settings and capture images and video conveniently with the touch screen. Images with 16MP and Full HD video can be stored directly on SD card (SD card not supplied). The microscope also has a HDMI connection, so the image is easily shown on a big monitor, TV, beamer or smartboard. The results can be shared with a bigger audience in lectures or teaching. FEATURESDigital microscope with integrated 7'' touchscreen 4 achromatic DIN objectives (RMS thread connection), parfocal length 45mm Objective magnifications of 4x, 10x, 40x, 60x (40x and 60x with specimen protection) Abbe condenser with iris diaphragm, fully adjustable and height adjustable High-contrast screen with natural colours, 1024x600px resolution Integrated Sony IMX206 camera sensor with 16MP HDMI port for connection to an external monitor SD card slot (supports up to 32GB, not included) USB port (for data transfer to SD card) SCOPE OF DELIVERYResearcher LCD Digital Microscope Set of 5 prepared slides and 5 blank slides Power adapter (EU) 5V 2A HDMI cable USB cable for transferring stored data to a PC Dust cover

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NATIONAL GEOGRAPHIC Microscope 300x-1200x incl. hardcase
A quick entry into the world of microscopy is provided by the National Geographic 300-1200x microscope including hard case. The basic euqipment for an immediate start is already included. FEATURES Microscope set for beginners Magnification: 300x-1200x Battery powered illumination Extensive accessory package for a quick start  Includes experiment kit for breeding brine shrimp (Artemia) SCOPE OF DELIVERY Slide box with 5 permanent slides, 5 slides and 10 cover glasses Dissecting tools (scissors, tweezers, pipette and 2 dissecting needles) Experiment kit (magnifier box, brine shrimp eggs, yeast) Sea salt Manual

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NATIONAL GEOGRAPHIC Walkie-Talkies with Long Range of up to 6 km and Hands-Free Function
This set of 2 NATIONAL GEOGRAPHIC Walkie-talkies for children is a must-have piece of gear on any outdoor adventure. Share secret messages on spy missions or coordinate with each other when playing cops and robbers: the wireless walkie-talkies have a range of up to 6 km, allowing you to communicate at long distances when outdoors. You can also choose between 8 channels and adjust the volume so that no one can listen in on your conversations. The devices also have 10 different ringtones. If you want to keep your hands free while you're out discovering nature, you can attach the walkie-talkies to your trousers, backpack or jacket with the belt clips and use the headphone socket. There is also a practical hands-free function that switches the walkie-talkie on automatically when you talk. Lightweight and compact design Thanks to their compact size and lightweight design, the walkie-talkies for children are highly portable and easy to carry. The menu is intuitive and can be controlled via the 5 function buttons. For dark days, each walkie-talkie features a built-in torch that can be switched on at the touch of a button- perfect for sending morse codes and secret light signals! In addition, the display lights up in the dark so that you can keep in contact with your team during nighttime walks. Eco-friendly design: if you use rechargeable batteries (not included), you can charge them directly in the NATIONAL GEOGRAPHIC walkie-talkies. A micro-USB cable is included for this purpose. FEATURES Set of 2 walkie-talkies for children aged 14 and above Ultra-long range of up to 6 km (with no obstacles) Hands-free function (VOX) 8 narrow-band channels 10 different ringtones Headphone socket Adjustable volume Battery-operated (each device requires 3 AAA batteries) Practical belt clip Built-in torch Rechargeable batteries can be charged directly in the device DELIVERY CONTENT 2x Walkie-talkies for children  2x Belt clips Micro USB cable Instruction manual

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The New BRESSER Science Infinity is the new top of the range of the biology microscope series by BRESSER. It is based on infinitely corrected planachromatic objective lenses with superb image quality. Because of the modern design and optics the installation of accessories is very simple and one has many options. The WF 10x eyepieces offer a large visual field of 22mm and are also suitable for spectacle wearers. For protection purposes the eyepieces are rubber coated. The interpupillary distance can be adjusted from ca. 55mm to 75mm. Dioptre adjustments are possible with both eyepieces.The bright and durable LED illumination is dimmable and also very practical for darkfield microscopy*.The Full Köhler illumination is adjustable with the built-in luminous-field diaphragm and the vertically and horizontally adjustable Abbe condenser (numerical aperture 1.25, with iris diaphragm). An imprint of the different possible magnifications on the condenser makes the adjustment of the iris diaphragm very fast and precise.Coaxial pinions drive the stage and focus which enables ergonomic operation of the microscope.The trinocular tube enables the direct attachment of a c-mount camera or MikroCam.SCOPE OF DELIVERYMicroscope with integrated LED illuminationplanachromatic objectives, infinity corrected (4x, 10x, 40x, 100x oil)2x eyepieces (WF 10x)Mains adapterManualImmersion oilDust cover*only with optional accessories

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