This achromatic objective has 20x magnification and a 0.69µm resolution limit. The objective is infinity-corrected. It can be used to study samples of 1µm and smaller over a large field of view. It is suitable for laboratory examination of biological fluids such as blood or urine (counting the number of leukocytes red blood cells cylinders).

The MAGUS MA20 20x/0.40 objective is used with 10x to 20x eyepieces. The objective corrects color aberration for blue and red spherical distortion for green and field curvature for 65% of the field of view diameter. During observations use a cover glass of 0.17 mm thickness.


  • MAGUS Bio 230B Biological Microscope
  • MAGUS Bio 230BL Biological Microscope
  • MAGUS Bio 230T Biological Microscope
  • MAGUS Bio 230TL Biological Microscope
Lens material optical glass
Optical design achromatic
Compatible tube length mm infinity (∞)
Magnification x 20
Aperture 0.40
Working distance mm 2.61
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 5905555018997
Package size (LxWxH) cm 4x7x4
Shipping Weight kg 0.115

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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