MAGUS Bio 240T

MAGUS Bio 240T Biological Microscope
Magnification: 40–1000x. Trinocular microscope head, coded revolving nosepiece, plan achromatic objectives, 3W LED illuminator, intelligent lighting control system

The microscope is suitable for observing transparent and translucent biological samples, such as smears and cross sections using the brightfield microscopy technique in transmitted light.
The coded revolving nosepiece maintains a comfortable brightness level when switching objectives. Intelligent control of microscope lighting increases the comfort and speed of the researcher’s routine work. “Smart” functions help students more easily enter the profession and gain the necessary professional experience.
Practical aspects play an important role for student microscopes: size, weight, ease of storage of the cords, and the microscopes themselves are important in everyday use. The microscope is convenient to move around on a table due to its small dimensions and low weight. The microscope does not take up much space in storage.
Key features
References and downloads


Microscope head
Trinocular head with infinity-corrected optics. Eyepiece tubes rotate 360°. The user can adjust the eye relief on the eyepiece to fit their height. The digital camera is mounted instead of an eyepiece in the trinocular tube. Beam splitting 0/100 and 100/0.
The kit includes 10x/20mm eyepieces with long eye relief. Flat rubber eyecups without protruding parts protect the optics of glasses from scratches.
Diopter adjustment is done directly on the microscope: Diopter adjustment rings are located on both eyepiece tubes.

Revolving nosepiece
The coded revolver for 4 objectives, oriented toward the interior: The user can see the objective inserted into the optical path, and the space above the stage is free.

Maintaining comfortable brightness levels when switching magnifications
The objectives of different magnifications transmit light with different intensity, and so each time you change objectives, the brightness of the light must be adjusted. In addition, brightness increases sharply when switching from a higher magnification objective to a lower magnification one. A sharp increase in brightness causes eye fatigue. MAGUS Bio 240T is equipped with intelligent brightness control. The microscope remembers the brightness for each objective that the user has selected and automatically sets this brightness when turning the nosepiece. Intelligent control reduces the time required to adjust brightness. MAGUS Bio 240T increases user comfort and saves time even when work requires frequent magnification changes.

Focusing mechanism
Coaxial coarse and fine focusing knobs are located at the base of the microscope on both sides. The user can place their hands on the table and take a relaxed pose while observing. The focus adjustment is smooth and effortless.
The coarse focus lock knob helps you quickly adjust the microscope after changing the subject of study. The knob is located on the left side of the microscope on the same axis as the focusing mechanism.
The ring on the right side adjusts the tension of the coarse focusing travel. The user adjusts the comfortable tension for work.

To ensure the ergonomic operation of the stage, it does not have an X-axis positioning rack. The belt-driven mechanism allows for the smooth movement of the specimen. The specimen holder is secured with two screws and can be easily removed during manual scanning.

Abbe condenser
An Abbe immersion condenser with N.A. 1.25 is fixed with two screws under the stage. The height of the condenser position is set at the factory and does not require adjustment by the user; the condenser is centered relative to the optical axis. Locking the condenser position eliminates the risk of accidentally changing the correct setup. The pre-configured condenser makes it easier for students to operate the microscope and free up more time for science.
The condenser knob adjusts the iris aperture diaphragm. Color marking corresponds to objective magnification. To achieve a contrast image on each objective, it is recommended to set the aperture adjustment knob to a position that corresponds to the number designation of the objective.

Light source
The transmitted light illuminator contains a 3W LED. The microscope illuminator has the function of adjusting the color temperature in the range from 3000 to 7000K. The user selects a color temperature that is comfortable for the eyes and easily changes it with one button when, for example, examining an object requires a change in light.
The LED has a lifespan of 50,000 hours.

LCD status screen
The LCD screen on the base of the microscope displays the objective magnification, brightness and color temperature of the light source, and operating mode (“sleep”, “eco”).
Using the screen and two knobs, the microscope user adjusts the brightness, selects the color temperature, locks brightness adjustment, and sets the sleep mode and the auto-off timer.

Ergonomic design
The sides of the “window” in the stand form handles for carrying the microscope with two hands. The design for the hidden placement of the power adapter and power cord improves the workplace esthetic and safety of carrying the microscope as well as simplifies storage of the device.

Key features

  • Observations of transparent and translucent samples in brightfield in transmitted light
  • The trinocular head with a vertical tube for installing a digital camera and height adjustment to adjust to the observer; light beam splitting 0/100 and 100/0
  • Coded revolving nosepiece: The brightness of the light source is set automatically depending on the selected objective
  • Pre-configured condenser with color-coded objective magnification allows for quick and precise aperture setting
  • Transmitted light illuminator – energy-saving 3 W LED with a lifetime of up to 50,000 hours
  • Intelligent lighting control system: automatic brightness selection when changing objectives and color temperature adjustment, brightness adjustment lock, auto-off timer, and LCD status screen
  • Stage without a positioning rack
  • Ergonomic stand with carrying handles and the hidden placement of the power cord and power adapter
  • Compact and lightweight design makes it easy to store the microscope on high shelves


  • Stand with transmitted light source, focusing mechanism, stage, condenser mount and revolving objective nosepiece
  • Abbe condenser
  • Trinocular head
  • Infinity plan achromatic objective: 4x/0.10
  • Infinity plan achromatic objective: 10x/0.25
  • Infinity plan achromatic objective: 40x/0.65 (spring-loaded)
  • Infinity plan achromatic objective: 100x/1.25 oil (spring-loaded)
  • Eyepiece 10x/20mm with eye relief (2 pcs.)
  • Eyepiece eyecup (2 pcs.)
  • C-mount camera adapter
  • Light filter
  • Microscope power adapter and power cord
  • Dust cover
  • User manual and warranty card

Available on request:
  • Digital camera
  • Calibration slide
  • Monitor


Microscope design: upright

Image field: flat

Transmitted light microscopy techniques: brightfield

Microscope magnification, x: 40–1000 basic configuration

Tube length: infinity (∞)

Microscope head type: trinocular

Beam splitting, eyepieces/trinocular tube: 0/100, 100/0

Microscope head: Gemel head (Siedentopf, 360° rotation)

Inclination: 30°

Microscope head magnification, x: 1

Interpupillary distance, mm: 47–75

Eyepiece diameter, mm: 23.2

Diopter adjustment: ±5D on both tubes

Eyepieces, x/field, mm: 10x/20, long eye relief

Revolving nosepiece: 4 objectives, coded

Optical design: infinity plan achromatic objectives (∞), parfocal distance: 45mm

Objectives, x/aperture/working range, mm: 4x/0.10; 10x/0.25; 40x/0.65; 100x/1.25 oil

Spring-loaded retractable assembly: 40x, 100x

Stage: 180×130mm, two-axis mechanical stage, without a positioning rack

Moving range, mm: 74/30

Condenser: Abbe condenser N.A. 1.25 with adjustable aperture diaphragm and color-coded objective magnification

Focusing mechanism: coaxial coarse and fine focusing knobs located on both sides

Coarse focusing travel, mm: 17

Coarse focusing travel, mm/circle: 37.7

Fine focusing travel, mm/circle: 0.2

Fine focusing scale value, μm: 2

Coarse focusing tension adjusting knob: +

Coarse focusing lock knob: +

Illumination: transmitted light

Transmitted light source: 3W LED, with color temperature adjustment (3000–7000K)

Intelligent lighting control system: automatic brightness adjustment when switching objectives, status display on LCD screen, sleep mode, eco mode

Power supply, V/Hz: AC power supply, 100–240/50/60; the AC/DC power adapter is located in a special socket on the back of the stand