COLO-OPTIC900TL — Trinocular Biological Microscope (Infinity Plan Achromatic, LED)
COLO-OPTIC900TL Trinocular Biological Microscope is a professional laboratory instrument built on an infinity-corrected plan achromatic optical system with Koehler LED illumination. Designed for routine brightfield observation, education, microbiology and camera documentation, it combines ergonomic viewing with precise coaxial focusing and a dedicated trinocular photo port.
OVERVIEW
Professional trinocular biological microscopes are essential for routine laboratory work, teaching and digital documentation — whenever sharp, high-contrast brightfield images and reliable optical performance are required. An infinity-corrected optical system, stable Koehler illumination and an ergonomic head design are critical for reproducibility and comfortable extended observation.
COLO-OPTIC900TL is a professional trinocular biological microscope with a Siedentopf-type head, infinity plan achromatic optics and a 5W adjustable LED Koehler transmitted illumination. It supports brightfield observation from 40x to 1000x, includes a dedicated camera photo port, and can be expanded with optional phase contrast and darkfield condensers from the OPTIC900 platform.
Trinocular biological microscope with Koehler LED illumination for lab, education and digital documentation — magnification 40x–1000x, infinity plan achromatic optics, trinocular Siedentopf head with photo port, and expandable with phase contrast and darkfield options.COLO.Science · Practical and robust equipment for everyday laboratory workflows.
COLO.SCIENCE KNOWLEDGE
Koehler LED illumination in brightfield microscopy
Learn how to set up Koehler illumination for LED transmitted light, optimize contrast and field diaphragm alignment, and prepare your COLO-OPTIC900 series microscope for reliable routine imaging on COLO.Science.
Product Overview
COLO-OPTIC900TL trinocular biological microscope is designed for fast, precise observation in both laboratory and teaching environments. With infinity plan achromatic optics, Koehler LED transmitted illumination, stable coaxial focusing and a trinocular Siedentopf head with a dedicated camera port, it supports routine brightfield observation, microbiology, quality control and digital documentation workflows.
Configuration notice — delivery depends on selected options
Microscopes may be delivered in different configurations depending on the application and selected accessories. The official PDF catalog defines the exact configuration, included components and available options for each model/variant. Content shown on this website is provided for general informational purposes only and may not represent the final delivered configuration. Specifications may change without notice.
Key Features
Infinity Plan Achromatic Optics
5W Adjustable LED Koehler
40x–1000x Magnification
Camera Photo Port
Coaxial Coarse & Fine Focus
Abbe Condenser NA 0.9/1.25
Ceramic or Rackless Stage
Phase Contrast & Darkfield Ready
Optics
Reliable brightfield imaging: Infinity optics, Koehler LED, trinocular documentation port
Sharp, High-Contrast Images
Infinity-corrected plan achromatic objectives with antifungal coating deliver flat, crisp brightfield images across the full field of view.
Stable Koehler LED Illumination
5W adjustable LED with Koehler illuminator provides even, cool illumination with long operating lifetime — ideal for extended sessions and consistent imaging.
Trinocular Camera Port
Dedicated trinocular photo port (20:80 split) supports C-mount cameras and DSLR adapters for digital microscopy and documentation workflows.
Optics & Objectives
- System: Infinity plan achromatic, F = 200 mm
- Standard objectives: 4x/0.10, 10x/0.25, 40x(S)/0.65, 100x(S)/1.25 oil
- Magnification: 40x–1000x (standard); expanded with optional 2x, 20x, 60x
- Antifungal coated, high NA, flat field
Head, Eyepieces & Stage
- Head: Trinocular Siedentopf, 30° inclined, 360° rotatable
- Interpupillary distance: 48–75 mm, ±5 diopter adjustment
- Eyepieces: WF10x/20 mm high eye-point wide-field (standard)
- Stage: 156 × 138 mm ceramic (standard) or ~193 × 155 mm rackless (optional)
Focusing, Condenser & Illumination
- Focusing: coaxial coarse & fine, 1 μm per graduation, total travel ~14 mm
- Condenser: Abbe NA 0.9/1.25 with iris diaphragm and filter holder
- Illumination: Koehler 5W LED, adjustable intensity
- Power: 100–240 V AC; low energy, minimal heat, long lifetime
Typical Applications
Technical Specifications (COLO-OPTIC900TL)
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Model | COLO-OPTIC900TL | Type | Trinocular brightfield biological microscope |
| Optical system | Infinity plan achromatic, F = 200 mm | Observation method | Brightfield (standard); phase contrast & darkfield optional |
| Head | Trinocular Siedentopf, 30° inclined, 360° rotatable | Interpupillary distance | 48–75 mm, ±5 diopter adjustment |
| Eyepieces | WF10x/20 mm high eye-point wide-field (standard) | Photo port split | Typical 20:80 (binocular:camera) |
| Objectives (standard) | 4x/0.10, 10x/0.25, 40x(S)/0.65, 100x(S)/1.25 oil | Magnification range | 40x–1000x (standard); expanded with optional objectives |
| Nosepiece | Revolving, reversed inward-facing, 4–5 positions | Condenser | Abbe NA 0.9/1.25, iris diaphragm, filter holder |
| Stage (standard) | Right-handed mechanical, 156 × 138 mm, XY travel 76 × 54 mm | Stage (optional) | Rackless ~193 × 155 mm, XY travel 75 × 50 mm |
| Focusing | Coaxial coarse & fine, 1 μm/graduation, 100 μm/rotation | Total focus travel | Approx. 14 mm (up to ~25 mm depending on config.) |
| Illumination | Koehler 5W LED transmitted, adjustable intensity | Power supply | 100–240 V AC built-in |
| Optional accessories | Phase contrast & darkfield condensers/sliders, C-mount & DSLR adapters, microscope cameras, filters, additional objectives | Dimensions / weight | See catalog (PDF) |
Note: If COLO-OPTIC900TL does not match your application needs, COLO.Science can propose an appropriate solution. Specifications may change over time.
Standard Delivery & Accessories
- COLO-OPTIC900TL microscope stand with trinocular Siedentopf head
- Pair of high eye-point wide-field eyepieces WF10x/20 mm (secured)
- Standard set of infinity plan achromatic objectives: 4x, 10x, 40x(S), 100x(S) oil
- Right-handed mechanical stage 156 × 138 mm with 76 × 54 mm travel (or rackless stage if ordered)
- Abbe condenser NA 0.9/1.25 with iris diaphragm and filter seat
- Koehler illuminator with 5W LED module and built-in power supply (100–240 V)
- 1x C-mount / camera adapter interface (platform-dependent; see selected configuration)
- Power cord, spare fuse and basic accessory kit (Allen screwdriver, immersion oil)
- Dust cover and user manual / quick start guide
Exact contents according to selected configuration, current catalog and order confirmation.
Frequently Asked Questions — COLO-OPTIC900TL
What magnification range does the COLO-OPTIC900TL cover?
With the standard set of infinity plan achromatic objectives (4x, 10x, 40x, 100x oil) and WF10x eyepieces, the microscope covers a magnification range of 40x to 1000x. The range can be extended with optional 2x, 20x and 60x objectives available from the OPTIC900 platform.
What is Koehler illumination and why does it matter?
Koehler illumination is a method of setting up the light path so that the illumination is perfectly even across the field of view, with no glare or hotspots. It provides optimal contrast and resolution for brightfield microscopy and is the standard setup for professional laboratory and research microscopes.
Can I connect a camera to the COLO-OPTIC900TL?
Yes. The trinocular head includes a dedicated photo port with a typical 20:80 light split (binocular:camera). It supports standard C-mount adapters and DSLR adapters, compatible with a wide range of microscope cameras. Camera adapters and compatible cameras are available as optional accessories.
Is phase contrast or darkfield possible with this microscope?
The COLO-OPTIC900TL is designed for brightfield observation as standard, but is fully compatible with optional phase contrast condensers, darkfield condensers and phase/darkfield sliders available from the OPTIC900 platform accessory range. Please refer to the catalog for the complete configuration list.
What is the difference between the ceramic stage and the rackless stage?
The standard ceramic mechanical stage (156 × 138 mm) offers a durable, chemical-resistant surface with a double slide holder and fine XY graduation. The optional rackless stage (~193 × 155 mm) provides a larger working area and improved ergonomics, with no protruding rack mechanism — preferred for intensive routine use and teaching environments.
OPTIC-900TL — Trinocular Biological Microscope (Infinity Plan Achromatic, LED)
COLO.Science · Practical and robust equipment for everyday laboratory workflows.
