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Advanced Research Biological Microscope

Advanced Research Biological Microscope


BS-2081 biological microscope has been designed to present a safe, comfortable and precision observation experience. With perfectly performed structure, high-definition optical image and ergonomical operating system, BS-2081 realizes professional analysis and meets all the needs of research in biological, medical, life science and other fields.


  1. Sapphire Glass Stage is optional. Mechanical stage with sapphire glass insert is optional, it is endurable, never could be scratched and allows users to clear the stage easily.
  2. Put Slide by One Hand. It is easy for users to put slides by one hand due to the special designed slide clip.
  3. Tilting Trinocular Head is optional.  The eye tube can be adjusted from 0°-35°.Digital cameras or DSLR cameras can be connected to the trinocular tube. The beam splitter has 3-position (100:0, 20:80, 0:100).The splitter bar can be assembled on the either side according to user’s requirements.
  4. ECO Function.The transmitted light would be off automatically after 30 minutes from operators leave. It can not only save energy, but also keep the lamp life longer.
  5. Low Position X-Y Knobs.The height of the stage control knobs can be adjusted up or down by 18mm to ensure a comfortable hand position, the tension of X-Y control knob also can be adjusted.   


BS-2081 research microscope is an ideal instrument in biological, histological, pathological, bacteriology, immunizations and pharmacy field and can be widely used in medical and sanitary establishments, laboratories, institutes, academic laboratories, colleges and universities.


Optical SystemNIS60 Infinite Color Corrected Optical System
Viewing HeadSeidentopf Trinocular Head, 30° inclined, interpupillary distance: 47mm-78mm; splitting ratio Eyepiece:Trinocular=100:0 or 20:80 or 0:100
Ergo Tilting Trinocular Head, adjustable 0-35° inclined, interpupillary distance 47mm-78mm; splitting ratio Eyepiece:Trinocular=100:0 or 20:80 or 0:100
Seidentopf Binocular Head, 30° inclined, interpupillary distance: 47mm-78mm
EyepieceSuper wide field plan eyepiece SW10X/25mm, diopter adjustable
Super wide field plan eyepiece SW10X/22mm, diopter adjustable
Extra wide field plan eyepiece EW12.5X/17.5mm, diopter adjustable
Wide field plan eyepiece WF15X/16mm, diopter adjustable
Wide field plan eyepiece WF20X/12mm, diopter adjustable
ObjectiveN-PLN Plan ObjectiveN-PLN 2X/NA=0.06, WD=7.5mm
N-PLN 4X/NA=0.10, WD=30mm
N-PLN 10X/NA=0.25, WD=10.2mm
N-PLN 20X/NA=0.40, WD=12mm
N-PLN 40X/NA=0.65, WD=0.7mm
N-PLN 100X(Oil)/NA=1.25, WD=0.2mm
N-PLN 50X(Oil)/NA=0.95, WD=0.19mm
N-PLN 60X/NA=0.80, WD=0.3mm
N-PLN-I 100X (Oil, with Iris Diaphragm)/ NA=0.5-1.25, WD=0.2mm
N-PLN PH Plan Phase Contrast ObjectiveN-PLN PH 10X/NA=0.25, WD=10.2mm
N-PLN PH 20X/NA=0.40, WD=12mm
N-PLN PH 40X/NA=0.65, WD=0.7mm
N-PLN PH 100X(Oil)/NA=1.25, WD=0.2mm
N-PLFN Plan Semi-apochromatic Fluorescent ObjectiveN-PLFN 4X/NA=0.13, WD=17.2mm
N-PLFN 10X/NA=0.30, WD=16.0mm
N-PLFN 20X/NA=0.50, WD=2.1mm
N-PLFN 40X/NA=0.75, WD=1.5mm
N-PLFN 100X(Oil)/NA=1.4, WD=0.16mm
NosepieceBackward Sextuple Nosepiece (with DIC slot)
CondenserSwing-out type condenser N.A.0.9/0.25
Turret Phase Contrast Condenser
Dark-field Condenser (Dry), used for objectives lower than 100X
Dark-field Condenser (Oil), used for 100X objective
Transmitted Illumination3W S-LED lamp, center pre-set, intensity adjustable
12V/100W halogen lamp, center pre-set, intensity adjustable
FocusingLow-position coaxial coarse and fine focusing, fine division 1μm, Moving range 35mm
StageDouble layers mechanical stage, size 190mmX152mm; moving range 78mmX54mm (double slide holder, Right or left handle); precision: 0.1mm
Double layers mechanical stage, size 190mmX152mm; moving range 78mmX54mm (double slide holder, Right or left handle); precision: 0.1mm; with Sapphire Crystal Glass Insert
DIC Kit10X DIC Objective Lens
20X DIC Objective Lens
Polarizer for DIC Kit
DIC insert plate(10X/20X), can be inserted into the DIC slot on nosepiece
DIC insert plate(40X/100X) can be inserted into the DIC slot on nosepiece
DIC Turret Condenser
Reflected fluorescence illuminatorTurret with 6 filter block cubes position, with iris field diaphragm and aperture diaphragm, central adjustable; with filter slot and polarizing slot; with fluorescence filters (B,G,U,V,R fluorescent filters are available).
100W mercury lamp house, filament center and focus adjustable; with reflected mirror, mirror center and focus adjustable.
Digital power controller, wide voltage 100-240VAC
ND6/ND25 Filter
Other Accessories0.5X C-mount Adapter
1X C-mount Adapter
Dust Cover
Power Cord
Cedar Oil 5ml
Simple Polarizing kit
Calibration slide 0.01mm
Multi Viewing Attachment for 2/3/5/7/10 person

Note: ● Standard Outfit, ○ Optional