The infinity plan achromatic objective 20x magnification and maximum resolution of 0.69µm. This objective is used for studying samples from 1µm over a wide field of view e.g. in urine or blood tests (determination of leukocytes erythrocytes cylinders and other constituents). Due to its minimal distortions the plan aromatic objective can also be used for digital photography and together with wide-field eyepieces (22mm field of view).

The MAGUS MA20 20x/0.40 objective has chromatic correction for blue and red and corrected spherical aberration for green. The field curvature is corrected for 90% of the field of view diameter. It is recommended to use 10x to 20x magnification eyepieces with the objective. The thickness of the cover glass for observing with this objective is 0.17mm.


  • MAGUS Bio 230B Biological Microscope
  • MAGUS Bio 230BL Biological Microscope
  • MAGUS Bio 230T Biological Microscope
  • MAGUS Bio 230TL Biological Microscope
  • MAGUS Bio 250B Biological Microscope
  • MAGUS Bio 250BL Biological Microscope
  • MAGUS Bio 250T Biological Microscope
  • MAGUS Bio 250TL Biological Microscope
  • MAGUS Lum 400 Fluorescence Microscope
  • MAGUS Lum 400L Fluorescence Microscope
Lens material optical glass
Optical design plan achromatic
Compatible tube length mm infinity (∞)
Magnification x 20
Aperture 0.40
Working distance mm 8.8
Parfocal distance mm 45
Cover glass thickness mm 0.17
Spring-loaded frame
Oil immersion
Body material copper
Thread type WJ 4/5'*1/36'
Warranty years 2
EAN 5905555018973
Package size (LxWxH) cm 4x7x4
Shipping Weight kg 0.1

Returns Policy

We have a 14-day return policy. If you are not satisfied with your purchase, please return it in its original packaging and be sure to put the original product packaging inside the shipping box to avoid any damage..

All items must be in their original condition and unused. The value of your purchase will be refunded. .

Shipping charges will not be refunded.

If the return is due to a defective product, you may be compensated for the return shipping.

Please contact us for more details if you need to make a return..


- From 0 to 2 kg - shipping cost: 12,50 euros.

- From 2.001 kg to 30 kg - shipping cost: 17,00 euros.

- From 30,001 kg - shipping cost: 30,00 euros.

In case of collection at our warehouse or resale points - the shipping is free.

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