BRESSER DIN Lens 20x

Achromatic objective, Magnification: 20x
Thread: RMS / DIN
optical length 160, parfocal length 45mm
For use with cover glass 0.17mm

€34.90*

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Product number: 5941020

EAN: 4007922003658

WEEE-Reg.-Nr.: DE 34323861

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FAQ - Frequently Asked Questions

I want to examine microorganisms such as lactic acid or photosynthetic bacteria – which microscope is suitable?

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.

Where can I find the Barlow lens?

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.

At higher magnifications the image is blurry or lacks contrast – what can I do?

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.

View all FAQs →

Product information "BRESSER DIN Lens 20x"

The BRESSER DIN-Lens 20x is an achromatic lens with standard thread to enhance the magnification variety of your Bresser Erudit DLX or Researcher Bino / Trino Microscope.

Specifications
• Magnification: 20x

Batteries required:	No
Colour:	silver
Material:	Metal

Product and safety instructions

Manufacturer:
Bresser GmbH, Gutenbergstraße 2, 46414 Rhede

Contact:
www.bresser.de

Warning notes

In case of defects, contact your retailer or the manufacturer.
Small parts can be swallowed. Keep small parts out of reach of children, allow children to work with the device only under supervision.
Keep packaging materials away from children. There is a risk of suffocation.

Accessories

BRESSER Cover Plates 22 x 22 mm 100 pcs

The Bresser cover slips have a size of 22 x22 mm and a thickness range from 0,13 – 0,17 mm. They are used to cover the sample on the slide. A thin and even sample is necessary for observations with high magnification. These cover slips are designed to work with all objectives that have the thickness of 0,17 mm included in their optical design. Usually you find this number printed on the objective. For beginner’s and student microscopes, these cover glasses are also suitable. FEATURES Cover slips, square, size 22x22mm Soda lime glass pre cleaned SCOPE OF DELIVERY 100 cover slips Kunststoff-Box

Available

€4.90*

Cover glasses, 100 pcs. 24x50mm Boro 3.3

Extra big cover glasses made from pure white, smooth Borosilicate glass (Boro 3.3). These cover glasses are especially suitable for liquid samples, like plankton or cell culture media. Also useful for skin scrapes from Koi or ornamental fish. You can diagnose a bigger sample volume in one go, making the diagnosis faster and more reliable. The sample will not dry out as fast as usual.Boro 3.3 is a high tech glass material with excellent surface and optical quality. Keep in mind, that the cover glass is not only a cover, but works as an optical element and will influence the resulting image quality. Most microscope objectives are designed for cover glasses of a certain thickness (Usually 0,17mm; marked on the objective).The cover glasses are precleaned and ready to use.Boro 3.3 glass is highly transparent and has excellent surface quality. For UV it is significantly more transparent than soda-lime glass and therefore especially suitable for fluorescence microscopy.SCOPE OF DELIVERY 100 cover glasses 24x50 in plastic box. Incl. drying agent, vacuum sealed.

Currently not available

€12.90*

Details

BRESSER Blank Slides/Cover Plates 50/100 pieces

The set slides / cover plates is use to make Preparations for biological microscopes. The slide holds the preparation it will be covered with a cover plate.SCOPE OF DELIVERY50 blank slides 76x26mm100 cover plates (0,17mm thickness)These BRESSER slides and cover glasses are compatible with the following BRESSER microscopes:Duolux (5012000)BioDiscover (5013000)BIORIT (5101000)Erudit DLX (5102000)ERUDIT MO (5110000)Researcher Bino (5722100)Researcher Trinocular (5723100)LCD microscope (5201000, 5201002)Science TRM 301 (5760100)BioScience Bino (5750500)BioScience Trino (5750600)Science ADL 601 P (5770200)Science ADL 601 F (5770500)Science MPO 401 (5780000)Science IVM-401 (5790000)

Available

€9.90*

BRESSER Set Microscope Slides

Slides and cover glasses are an indispensable accessory which has also impact on the image quality. For most biological microscopes, the cover glass thickness is an important optical parameter, which is therefore included in the optical design and, if so, printed on the sleeve of every objective. You can usually see the number 0.17 which is the thickness in millimeters. For demanding applications in the laboratory, or for microphotography, using cover glasses with the desired thickness and high quality is necessary.The cover glasses included in the set are made of Boro 3.3 glass and are standardized to a thickness of 0.16-0.19mm. So they match the desired 0.17mm really good and give the best possible image quality. These Boro 3.3 cover glasses are pure white, without streaks and are pre-cleaned and ready to use. They are also especially suitable for fluorescence microscopy.The slides are made of soda lime glass, and have ground edges for safe handling. They have a matte field for writing on both sides (top and bottom). Slides and cover glasses are packed separately and in a vacuum sealed bag, containing moisture absorbent. They can be stored for a long time without loss of quality from hydrolysis and are easy to take out.

Available

€14.90*

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BRESSER Immersion oil 5ml nD=1.515

The immersion oil is used as a medium to get focus with a 100x oil objective. Without this oil it's not possible to get a sharp image.Volume: 5 ml

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€9.90*

BRESSER DIN Objective 60x

The BRESSER DIN-Objective 60x is an achromatic objective with standard diameter to enhance the magnification variety of your BRESSER Erudit DLX or Researcher Microscope. The objective has a parfocal length of 45mm. It is not recommended for the models Erudit Basic Mono/Bino, as these have a shorter parfocal length.

Incoming

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Details

BRESSER Set Microscope Slides

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€14.90*

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

Available

€499.90*

BRESSER Blank Slides/Cover Plates 50/100 pieces

Available

€9.90*

BRESSER DIN Wide Field Eyepiece WF15x

Standard wide field microscope eyepiece with 15x magnification and 23.2mm diameter. Suitable for following microscopes: Erudit DLX (5102000)Researcher Bino (5722100)Researcher Trino (5723100)BioScience Trino (5750600)Science TRM-301 (5760100)Science ADL-601P (5770200)Science ADL-601F (5770500)Science MPO-401 (5780000)Science MTL-201 (5807000)Biolux ICD (5802000)FEATURES DIN WF 15x/23mm Diameter: 23.2mm Magnification: 15x SCOPE OF DELIVERYBRESSER DIN Wide Field Eyepiece WF15x

Available

€39.90*

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BRESSER Planachromat 20x

BRESSER Planachromat 20x - this DIN-Objectives are processed with the highest quality materials to enhance the image replication.Plan correction minimizes refocus between center and edge of field and is especially useful for imaging.Fits the following models:• Erudit DLX (5102000, 5102060)• Researcher Bino (5722100)• Researcher Trino(5723100)• Science TRM 301 (5760100)• BioScience Trino (5750600)• Science ADL 601 P (5770200) only for observations with transmitted illumination• Science MPO 401 (5780000)Not recommended for models Erudit Basic Mono and Bino (5102100, 5102200) and Erudit MO (5110000) as those have a different parfocal length.

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BRESSER DIN Objective 60x

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BRESSER DIN PL Objective 20x, Infinity

The BRESSER DIN PL Objective 20x, Infinity has a higher quality optics and thus achieves a particularly high resolution of the image. The plan correction ensures an smooth image field (no refocusing between the center and edge of the image field). Therefore especially recommended for photographic applications. This lens is infinity corrected and specially designed for the BRESSER Science Infinity microscope. SCOPE OF DELIVERY 1 piece 20x planachromatic lens, Infinity

Available

€229.90*

BRESSER 59-42320 Spare Bulb LED connecter plug

Fits the following models: BRESSER Junior Biolux Sets 8855000, 8855001, 8855002, 8855003 BRESSER Micro Set 5011100 BRESSER Biolux NV 5116200 BRESSER Biolux SEL 8855600E8G000, 8855600WXH000, 8855600B4K000, 8855600TJ5000 BRESSER Biolux SEL 8855610 BRESSER Junior 40x – 2000x 8855500 BRESSER Biolux Advance 5203000 BRESSER LCD Mikroskop 5201000 BRESSER LCD Touch Mikroskop 5201002 NATIONAL GEOGRAPHIC Mikroskop 9039000, 9039100

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€7.90*

Color Filter Set Essential 1,25" Red,Green,Blue,Yellow

Color Filter Set Essential is recommended for Moon & Planets from 50mm (2") Aperture Essential Set includes the following filters: BRESSER Filter Red (1,25):The blue/blue green light is totally blocked. The contrast between the card and the lighter zones will enormously increase. This is truly helpful when you watch Jupiter or Saturn. Or for mars, watching the poles. BRESSER Filter Green (1,25):The green filter is to increase the contrasts enormously between the red and the blue regions of the cloud structures on the gas planets Jupiter and Saturn. Seeing our Earth Moon through the green filter, the contrasts of each ray crater become clearly more visible.BRESSER Filter Blue (1,25):The color of light blue really supports watching the high clouds on Mars. The contrast increases. The dark red structures will be shown even darker, so this is the perfect filter for watching the big red Flecks on the gas planet Jupiter. The rings of Saturn will be accentuated, the structures of the Venus Atmosphere will be even finer. BRESSER Filter Yellow (1,25):Watching the Moon surface through the filter, the contrasts will enormously increase. Same with planet Mars. On the huge planet Jupiter, when using the filter, you can even see the contrasts between the cloud-bands and a lot more details. Starting with a telescope diameter of 8“ and a clear sight, you even get to see various details of Saturn. What ist a color Filter for and do we really need it? Color Filters darken the light slightly, that reaches the eye or the sensor of the camera. This eliminates for instance stronger transitions. The result is that your picture turns out with more contrast which automatically shows more details. FEATURESVersatile colour filter set For eyepieces and accessories with 1.25" filter thread Increase contrast on moon and planets Making object details more visibleSCOPE OF DELIVERY4pcs color filter: Red, Green, Blue, Yellow

Available

€9.90*

BRESSER Biolux NV 20x-1280x Microscope with HD USB Camera

The BRESSER Biolux NV comes with a wide range of accessories and is an ideal beginners' microscope. A unique feature of these models, the Barlow zoom system is inside the eyepiece tubes: With the barlow lens the magnification can be varied by a factor of 2 in visual observation. This feature, together with 3 objectives and 2 interchangeable wide field eyepieces gives a magnification range from 20x to 1280x. With the mechanical desk you can move your sample precisely even when observing at high magnifications. For optimal illumination a variable LED for transmitted and incident light together with a filter wheel gives the ideal light for all samples. Light from above is especially imortant to observe non transparent samples like leaves, small insects and much more. This makes microscopy for beginners very easy! The power is supplied by batteries (3x AA). A dust cover, 5 prepared slides and 5 blank slides and cover slips are included for making your own samples. With the included HD camera you can observe your samples on the computer screen, and capture images and video with the included Windows software. The software is compatible with Windows 10 and 11. With this camera, you can always document your interesting observations and share them with others. FEATURESbiological microscope with HD cameraLED light for transmitted and incident lightbattery-poweredlots of accessoriesincident light for objects not higher than 4mm 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 DELIVERYSolid metal Microscopemechanical deskHD camera with metal housing, resolution 1280 x 7202 eyepieces: 5x and 16x3 objectives: 4x, 10x and 40x1 Barlow lens with 2x magnificationMicroscope toolsmechanical cross table5 prepared slides5 blank slidesDust cover and hard case

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€169.90*