
Open Box 40X-1000X LED Biological Trinocular Compound Microscope
Key Features
- 40X to 1000X achromatically-corrected magnification for studying a range of specimens including hair follicles, cells, and bacteria.
- A professional biological microscope with a sleek, modern design.
- Professional features include a Siedentopf trinocular head for precise adjustments, a 2-layer mechanical stage with low-position controls, and coaxial coarse and fine focus with adjustable tension for ergonomics and an efficient workflow.
- Cool, energy-efficient LED lighting produces natural colors and low heat for viewing live specimens.
- The trinocular photo port allows you to easily mount a camera. The T550 is compatible with our CX series C-mount photo ports with built-in reduction.
- This is an open box item and all Open Box items are non-returnable
The T550 is designed to be an intermediate-level biological microscope for professional use or classrooms, with bright, high-efficiency LED illumination and precision ergonomic mechanics. The elegant modern look adds an aesthetic appeal to the functional design, with the trinocular Siedentopf viewing head, coaxial focusing system with tension control, and low-heat sub-stage lighting. The simul-focal CX series photo port allows for various optional camera mounts with a range of magnifications to accommodate any C-mount sensor-format.
To customize the microscope to your viewing comfort, the eyepiece spacing can be easily adjusted using a precision Siedentopf mechanism. A diopter is available on the left ocular tube to compensate for asymmetry, and the ocular tubes are angled at 30° to comfortably accommodate a seated position without neck strain. The 23mm photo port is height-adjustable to match focus with the eyepieces, and can be replaced with an optional CX series C-mount port which have built-in reduction, and can directly interface with C-mount cameras. The head uses a simul-focal optical system to project the image simultaneously to both eyepieces and the photo port without the need for any switching.
The objective turret provides instant access to 4 magnification levels to easily focus in on minute details from 40X to 1000X. This covers magnifications needed for studying hair follicles, cells, and bacteria. The turret's reversed orientation provides more working room above the stage. These high-quality lenses are achromatically corrected to improve resolution and color accuracy.
The 2-layer mechanical stage provides smooth and precise movement for examination of specimen slides. The stage's low-position controls are conveniently placed near the coaxial focus knobs for a streamlined workflow. Examining specimen slides is intuitive and precise for users at any skill level. LED sub-stage lighting provides bright illumination with high color-temperature for natural colors. The cool, energy-efficient lighting reduces heat for viewing live specimens, and provides high contrast for digital imaging. The Abbe light condenser has a high 1.25 numerical aperture for oil-immersion, and an iris diaphragm to optimize contrast and depth-of-field.
Specifications

Technical drawings with measurements (in mm, binocular model shown)
Optical System | Finite-conjugate |
Mechanical Tube Length | 160mm |
Head | Trinocular, 30° incline, 360° rotatable |
Interpupillary Adjustment | Siedentopf compensation-free gemel |
Ocular Diameter | 23mm |
Ocular Diopter | left ocular, ±5dp |
Eyepieces | 10X |
Photo Port | height-adjustable 23mm tube, CX series |
Objective Lenses | DIN standard |
Objective Parfocal Distance | 45mm |
Objective Mounting Thread | RMS 20.32mm |
Objective Turret | reversed quadruple |
Focusing System | Coaxial coarse and fine focus, tension control |
Focus Range | 30mm |
Division of Fine Focus | 0.002mm |
Stage Design | Double-layer with caliper |
Stage Dimensions | 140mm x 127mm |
X-Y Translation Range | 76mm x 53mm |
Transmitted Illumination | LED |
Condenser | NA1.25 Abbe condenser with iris diaphragm, 32mm filter holder |
Power | 100-240VAC 50/60Hz |
Objective Lenses
Magnification | Corrections | NA | WD | Immersion Medium | Cover-glass Thickness |
---|---|---|---|---|---|
4X | achromatic | 0.10 | 21.3mm | — | 0.17mm |
10X | achromatic | 0.25 | 6.4mm | — | 0.17mm |
40X | achromatic | 0.65 | 0.48mm | — | 0.17mm |
100X | achromatic | 1.25 | 0.15mm | oil | 0.17mm |
Packing List:
application | Microscope-Clinic, Microscope-Veterinary |
camera compatibility | None |
camera connection type | N/A |
category | Microscope-Compound |
color | Microscope-White |
compatibility | None |
condenser design | Abbe-Spiral w/ diaphram |
field view | Widefield |
head style | Microscopes-Trinocular |
illumination style | Transmitted (Bottom) |
light type | LED |
magnification power config | 40X-1000X |
magnifying power | Microscope-40X to 1000X |
magnifying style | Microscope-Multi Power |
Manufacturer | AmScope |
microscope application | College, Teaching/Training |
microscope category | Compound |
microscope color | White |
microscope condenser design | Abbe-Spiral w/ diaphram |
microscope condenser optics | NA 1.25 |
microscope condenser type | Brightfield |
microscope eyepiece power | 10X |
microscope eyepiece size | 23mm |
microscope field view | Widefield |
microscope head style | Trinocular |
microscope iris | With Iris |
microscope light power | 3W |
microscope light shape | Built-in |
microscope light type | LED |
microscope magnifying power | 40X to 1000X |
microscope number of bulbs | 1 |
microscope objective power | 4X, 10X, 40X, 100X |
microscope objective size | 20mm |
microscope optics | Achromatic |
microscope power supply | Wide Band |
microscope stage | Two-layer Mechanical Stage |
microscope stage div | 1.00mm |
optics | Achromatic |
pixel | N/A |
prop 65 |
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stage | Microscope-Two-layer Mechanical Stage |
AmScope products are warranted against manufacturer’s defects in material and workmanship from the original date of purchase, for the following years:
• Five Year Warranty for Microscopes: All our microscopes come with a five (5) year factory warranty against manufacturing defects, covering labor and parts.
• Ten Year Warranty for Euromex Microscopes: All our Euromex microscopes come with a ten (10) year factory warranty against manufacturing defects, covering labor and parts.
• One Year Warranty for Telescopes: All our telescopes come with a one (1) year warranty, except when specified in the description.
• One Year Warranty for Accessories: All our microscope accessories (USB cameras, illuminators, illumination, dust covers, and etc.) come with a one (1) year warranty, except when specified in the description.
• One Year Warranty for Items labeled as “Product Ships From Manufacturer”: All products that are shipped directly from the manufacturer come with a one (1) year warranty, except when specified in the description.
Warranty does not apply for consumable accessories and parts such as bulbs, batteries, fuses, cords, optical components or any add-on accessories such as mechanical specimen holders that are not built into the microscope stage as an integral part of the original manufacture, etc. Warranty does not cover microscopes, lenses cameras or other accessories that have become inoperable due to dirt or damage due to misuse or lack of maintenance.
Note: Buyers are responsible for return shipping and handling cost for warranty services. Our warranty covers parts and labor only.
The T550 is designed to be an intermediate-level biological microscope for professional use or classrooms, with bright, high-efficiency LED illumination and precision ergonomic mechanics. The elegant modern look adds an aesthetic appeal to the functional design, with the trinocular Siedentopf viewing head, coaxial focusing system with tension control, and low-heat sub-stage lighting. The simul-focal CX series photo port allows for various optional camera mounts with a range of magnifications to accommodate any C-mount sensor-format.
To customize the microscope to your viewing comfort, the eyepiece spacing can be easily adjusted using a precision Siedentopf mechanism. A diopter is available on the left ocular tube to compensate for asymmetry, and the ocular tubes are angled at 30° to comfortably accommodate a seated position without neck strain. The 23mm photo port is height-adjustable to match focus with the eyepieces, and can be replaced with an optional CX series C-mount port which have built-in reduction, and can directly interface with C-mount cameras. The head uses a simul-focal optical system to project the image simultaneously to both eyepieces and the photo port without the need for any switching.
The objective turret provides instant access to 4 magnification levels to easily focus in on minute details from 40X to 1000X. This covers magnifications needed for studying hair follicles, cells, and bacteria. The turret's reversed orientation provides more working room above the stage. These high-quality lenses are achromatically corrected to improve resolution and color accuracy.
The 2-layer mechanical stage provides smooth and precise movement for examination of specimen slides. The stage's low-position controls are conveniently placed near the coaxial focus knobs for a streamlined workflow. Examining specimen slides is intuitive and precise for users at any skill level. LED sub-stage lighting provides bright illumination with high color-temperature for natural colors. The cool, energy-efficient lighting reduces heat for viewing live specimens, and provides high contrast for digital imaging. The Abbe light condenser has a high 1.25 numerical aperture for oil-immersion, and an iris diaphragm to optimize contrast and depth-of-field.
Specifications

Technical drawings with measurements (in mm, binocular model shown)
Optical System | Finite-conjugate |
Mechanical Tube Length | 160mm |
Head | Trinocular, 30° incline, 360° rotatable |
Interpupillary Adjustment | Siedentopf compensation-free gemel |
Ocular Diameter | 23mm |
Ocular Diopter | left ocular, ±5dp |
Eyepieces | 10X |
Photo Port | height-adjustable 23mm tube, CX series |
Objective Lenses | DIN standard |
Objective Parfocal Distance | 45mm |
Objective Mounting Thread | RMS 20.32mm |
Objective Turret | reversed quadruple |
Focusing System | Coaxial coarse and fine focus, tension control |
Focus Range | 30mm |
Division of Fine Focus | 0.002mm |
Stage Design | Double-layer with caliper |
Stage Dimensions | 140mm x 127mm |
X-Y Translation Range | 76mm x 53mm |
Transmitted Illumination | LED |
Condenser | NA1.25 Abbe condenser with iris diaphragm, 32mm filter holder |
Power | 100-240VAC 50/60Hz |
Objective Lenses
Magnification | Corrections | NA | WD | Immersion Medium | Cover-glass Thickness |
---|---|---|---|---|---|
4X | achromatic | 0.10 | 21.3mm | — | 0.17mm |
10X | achromatic | 0.25 | 6.4mm | — | 0.17mm |
40X | achromatic | 0.65 | 0.48mm | — | 0.17mm |
100X | achromatic | 1.25 | 0.15mm | oil | 0.17mm |