Ratings & Reviews

The Swift SW350B is a workhorse of a compound binocular microscope, providing incredibly sharp magnification and ergonomic usability. Designed as a trusty, powerful tool for clinical, laboratory, and educational use, the SW350B is suitable for high school, university, and medical students as well as the seasoned professional.

Features a Siedentopf binocular head that rotates 360 degrees for easy shared use and allows for quick adjustments to the eyepieces for different interpupillary distances without losing focus. The swiveling head can also lock in any position for additional stability. Ocular tubes are tilted at an ergonomic 30 degrees to reduce neck and eye strain. The microscope comes with two interchangeable widefield 10X and 25X glass ocular eyepieces, which pair with the four achromatic DIN objectives -- 4X, 10X, 40X(Spring), and 100X(Spring, Oil) -- in the rotating nosepiece to provide 6 magnification levels between 40X and 2500X. Coarse and fine focusing dials on both sides of the metal arm make fluid and exact precision adjustments.

For specimen viewing, an LED bulb beneath the stage transmits light up through an industry-standard Abbe condenser with 1.25 aperture and an iris diaphragm. Manually move the condenser closer to or farther from the stage to adjust brightness and evenness of light as well as image contrast. A metal slide holder locks specimens into place for viewing on the sizeable double-layered mechanical stage. An x-y translational control knob moves the stage and the slide holder left-to-right and front-to-back, eliminating the need to re-clip slides in order to view the entire specimen.

The SW350B has a compact but solid body that is nonetheless easily portable with the built-in arm handle.

What can you see with it? Compound microscopes offer detailed, cellular-level views of transparent or dyed specimens prepared and mounted on a slide. (For magnifying solid objects, use a stereo microscope.)

More Information
Model NumberSW350B
Microscope TypeCompound Binocular
Specialized FeaturesBrightfield
Optical SystemFinite optical system, 160mm
Observation TubeSiedentopf Trinocular
Inclination30° inclined
Interpupillary Distance48-75mm
Diopter AdjustmentOn left tube, +/-5 dpt
EyepiecesWF10X/18mm, WF 25X/8mm
NosepieceQuadruple revolving
Objectives4X/0.10 (WD 37.5mm), 10X/0.25 (WD 6.55mm), 40X/0.65/S (WD 0.65mm), 100X/1.25(WD 0.198mm)
Head Magnifications40X, 100X, 400X, 250X, 1000X, 2500X
Objective Mounting ThreadW 4/5" x 1/36" (RMS standard)
StageDouble layer coaxial mechanical stage with slide holder
Stage Size130mmx130mm
Mechanical Stage X&Y Range70x30mm
Upper Limit StopPreset but adjustable
CondenserAbbe condenser N.A 1.25 with iris diaphragm
Focus MechanismCoaxial coarse and fine, fine is graduated
Fine Focus Precision0.027mm minimum increment
Z-axis Movement14.5mm
FilterBult-in frosted glass
MaterialMetal base and body
IlluminationBuilt-in transmitted 1W LED with intensity control
Power supply110-240V switching (plug type should be chosen according to different regions)
Dimensions (Width and Length, Height)195(L)*145(W)*370(H) mm
Individual Package Dimensions32*22.5*45.5 CM
Individual Package Weight4.65kg
Ratings & Reviews
You're reviewing:
Swift SW350B 40X-2500X Compound Microscope

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  • 1 SW350B microscope
  • 1 pair WF10X eyepieces
  • 1 pair WF25X eyepieces
  • 1 sample immersion oil
  • 1 blue filter
  • 1 dust cover
  • 1 spare fuse
  • User manual
Optics System
  • Wide-field 10X and 25X eyepieces
  • 4 Objective lenses in a revolving nosepiece: 4X, 10X, 40X (Spring), 100X (Spring, Oil)
  • Magnification levels: 40X, 100X, 250X, 400X, 1000X, 2500X
  • Interpupillary distance: 48-75mm
  • Adjustable ocular diopter: +/- 5dp


  • 30 degree inclined, 360 degree rotatable Binocular Siedentopf head
  • Mechanical stage with rack stop, 130x130mm
  • Stage x-y travel range: 70x30mm
  • NA 1.25 Abbe condenser with iris diaphragm
  • Coaxial coarse and fine focus knobs
  • Transmitted illumination with 1W LED bulb, adjustable brightness
  • Power supply: 110-240V power input
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