COLO-OPTIC900BL Binocular Biological Microscope (Infinity Achromatic, LED)
OVERVIEW
The COLO-OPTIC900BL is a robust binocular biological microscope based on an infinity-corrected optical system with achromatic objectives and powerful LED illumination.
It combines ergonomic binocular observation, smooth coaxial focusing and flexible stage options, making it suitable for routine laboratory work, education and basic research in the life sciences.
With its extended wide-field eyepieces, precision Siedentopf head and choice of ceramic or rackless stage, OPTIC900BL offers reliable brightfield performance and can be expanded with
optional plan objectives, phase sliders and darkfield stop for more advanced contrast techniques when needed.
COLO.SCIENCE KNOWLEDGE
Brightfield microscopy in routine laboratories
Explore brightfield microscopy principles, sample preparation tips and how to choose the right objectives and illumination for your COLO-OPTIC series microscopes on COLO.Science.
TYPICAL APPLICATIONS
- Routine brightfield observation of biological specimens
- Microbiology, smears and basic microorganism studies
- Education and training in schools, universities and medical programs
- Quality control and routine inspection in biomedical laboratories
- General laboratory biology and sample documentation
- Entry-level phase contrast and darkfield (with optional sliders and dark stop)
MODELS & DIMENSIONS
| Model | Head / contrast | Stage type | Dimensions / weight |
|---|---|---|---|
| COLO-OPTIC900BL | Binocular, brightfield, LED | 156 × 138 mm ceramic stage (standard) or 185 × 177 mm rackless stage (optional) | See catalog (PDF) |
TECHNICAL SPECIFICATIONS
| Product name | COLO-OPTIC900BL Binocular Biological Microscope |
| Type | Laboratory binocular brightfield microscope with infinity achromatic optics |
| Eyepieces | Extended EWF 10x/20 mm eyepieces, Ø 30 mm tubes; eyepieces can be secured to the tubes. |
| Head | Binocular Siedentopf-type head with 30° inclined tubes, interpupillary distance 52–75 mm, diopter adjustment. Trinocular head with Ø 30 mm photo port and ergonomic tilting head (0:100 / 50:50) available as options. |
| Nosepiece | Revolving, reversed nosepiece for 4 objectives (quintuple nosepiece for 5 objectives optional). |
| Objectives – standard | Infinity achromatic objectives: 4x/0.13, 10x/0.30, S40x/0.70, S100x/1.25 oil. All optics are anti-fungus treated and anti-reflection coated for maximum light throughput. |
| Objectives – optional | Infinity E-Plan objectives: 4x/0.10, 10x/0.25, 20x/0.40, S40x/0.65, S100x/1.25 oil. Infinity plan objectives: 4x/0.10, 10x/0.25, 20x/0.40, S40x/0.65, S60x/0.80, S100x/1.25 oil. Additional plan achromatic objectives (2x, 4x, 10x, 20x, 40x(S), 60x(S), 100x(S) oil) available according to configuration list. |
| Stage – standard | 156 × 138 mm ceramic stage with integrated 76 × 54 mm mechanical stage. Very tough ceramic surface protects against marks and scratches and minimizes stray light reflections. |
| Stage – optional | 185 × 177 mm rackless stage with double slide holder and integrated 75 × 50 mm rackless mechanical stage. No protruding parts, smoother movements and improved safety. |
| Condenser for brightfield | Standard height-adjustable Abbe condenser NA 1.25 for brightfield; accepts sliders with phase annuli suitable for plan phase 10x/20x or S40x/S100x oil infinity objectives for economical phase contrast. With magnification indication. Slider with simple dark stop for darkfield up to 400x magnification available. |
| Focusing | Coaxial coarse and fine adjustments, 100 graduations, 1 μm per graduation, 100 μm per rotation, total travel approx. 14 mm (up to ~25 mm depending on configuration). Adjustable rack stop to protect samples and objectives; coarse adjustment with friction control. |
| Illumination | 5 W adjustable LED illumination with internal 100–240 V power supply. The innovative design offers larger apertures, allowing the optical system to produce images at higher resolutions, very close to the theoretical diffraction limit. Low energy consumption, minimal heating and long LED lifetime. |
| Optical system | Infinity corrected optical system; illumination on models with IOS plan and plan phase infinity-corrected objectives provides high contrast and maximum achievable resolving power. |
| Configuration list | Standard and optional items (heads, eyepieces, objectives, stages, condensers, illuminators, filters, camera adapters, lamps and accessories) according to detailed configuration list in the catalog. |
STANDARD DELIVERY & ACCESSORIES
- COLO-OPTIC900BL microscope stand with binocular Siedentopf head
- Pair of EWF 10x/20 mm eyepieces (secured)
- Standard set of infinity achromatic objectives 4x, 10x, 40x(S), 100x(S) oil
- Ceramic mechanical stage 156 × 138 mm with 76 × 54 mm travel (or rackless stage if ordered)
- Abbe condenser NA 1.25 for brightfield, ready for sliders
- 5 W LED illumination device with built-in power supply
- Power cord, fuse and basic accessory kit (Allen screwdriver, immersion oil)
- Dust cover and basic user manual / quick start guide
- Optional: trinocular head, tilting head, phase contrast and darkfield sliders
- Optional: C-mount adapters, DSLR adapters and digital camera for documentation
Exact contents according to selected configuration, current catalog and order confirmation.
MAIN TECHNICAL PARAMETERS
| Optical system | Infinity corrected, brightfield with achromatic or optional plan objectives |
| Observation methods | Brightfield (standard); optional economical phase contrast and darkfield up to 400x with sliders and dark stop |
| Magnification range | Standard: 40x–1000x (4x, 10x, 40x, 100x oil with 10x eyepieces); expanded range possible with optional 2x, 20x and 60x objectives. |
| Head type | Binocular Siedentopf head, 30° inclined, interpupillary distance 52–75 mm, diopter adjustment; optional trinocular and ergonomic tilting heads. |
| Eyepieces | EWF 10x/20 mm, Ø 30 mm, secured against removal; optional 10x/22 mm, pointer and reticule eyepieces. |
| Stage travel | Mechanical stage travel matching 76 × 54 mm (ceramic) or 75 × 50 mm (rackless) specimen area. |
| Focusing precision | Fine focus 1 μm per graduation, 100 μm per rotation; total focusing range approx. 14 mm. |
| Illumination | 5 W LED, adjustable intensity, low heat, long lifetime; compatible with Kohler illuminator options and filters. |
| Application focus | Routine biological brightfield, microbiology, education, QC laboratories and general life-science work. |
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