DS BS200 Biological Microscope

Overview

The DS BS200 Biological Microscope is an upright, infinity-corrected optical instrument engineered for routine and advanced life science applications in academic laboratories, clinical training facilities, and quality control environments. Utilizing the UCIS (Universal Color-Independent Standard) infinity-corrected achromatic optical system, the BS200 delivers high-fidelity image contrast, minimal chromatic aberration, and consistent resolution across magnifications from 40× to 1000× (with 100× oil immersion objective). Its rigid mechanical architecture—featuring a thermally stable cast-aluminum base, precision-ground stage rails, and backlash-free coaxial focusing mechanism—ensures long-term optical alignment stability and reproducible focus repeatability. The microscope supports both transmitted brightfield illumination and modular contrast enhancement techniques, including phase contrast and darkfield observation, enabling reliable morphological assessment of unstained or lightly stained biological specimens such as blood smears, tissue sections, protozoa, and cultured cells.

Key Features

• UCIS infinity-corrected achromatic optical pathway optimized for color fidelity and field flatness across the entire visual field.
• Hinged binocular head with 30° inclination and full 360° rotation, accommodating varied user postures and collaborative viewing scenarios.
• Interpupillary distance adjustable from 52–75 mm (48–75 mm option available), supporting a broad anthropometric range without compromise in ocular alignment.
• Wide-field plan eyepieces (WF10X/18 mm) with high eye-point design ensure comfortable observation for users wearing corrective eyewear.
• Four-position inward-swinging objective turret with spring-loaded 40X and 100X objectives—minimizing accidental lens contact during high-magnification work.
• NA 1.25 Abbe condenser with centering screws and dedicated slots for phase contrast and darkfield annuli—enabling rapid contrast mode switching without realignment.
• Coaxial coarse/fine focusing system featuring dual-scale micrometric graduation (0.001 mm per division on fine knob), calibrated for precise Z-axis positioning critical in serial section analysis and morphometric measurement.
• Dual illumination options: switch-mode 6 V/20 W halogen lamp (with Osram or domestic bulb compatibility) or energy-efficient 3 W LED source—both offering continuous brightness control and stable color temperature over time.

Sample Compatibility & Compliance

The BS200 is validated for use with standard glass microscope slides (76 × 26 mm), coverslips (No. 1.5, 0.17 mm thickness), and common mounting media including glycerol, DPX, and aqueous solutions. Its mechanical stage accommodates slide-based preparations, petri dish inserts (via optional adapter), and live-cell chambers (e.g., 35 mm dishes with bottom thickness ≤ 0.17 mm). The optical train meets ANSI Z80.10 and ISO 8578 standards for resolution performance at specified magnifications. While not certified for IVD or diagnostic use under FDA 21 CFR Part 809, the instrument conforms to general laboratory equipment safety requirements per IEC 61010-1 and is suitable for GLP-aligned workflows when paired with audit-trail-capable digital imaging systems (e.g., DS SX3 1X C-mount adapter + compliant camera firmware).

Software & Data Management

The BS200 itself is an analog optical platform with no embedded electronics or onboard software. However, it integrates seamlessly with third-party digital imaging ecosystems via standardized C-mount adapters (SX2 0.5X, SX3 1X, SX4 0.25X) and DSLR interfaces (SDF1, SX10 2.5X). When coupled with compliant imaging software—such as DS ImagePro Suite or open-source alternatives like Fiji/ImageJ—the system supports metadata tagging (objective ID, magnification, illumination type), timestamped acquisition, and export in TIFF/PNG formats compatible with LIMS and ELN platforms. Optional LED power modules (DQLC1) include rechargeable battery support for field-deployable educational use, with runtime logging capability via external USB data loggers.

Applications

• Routine histology education and pathology training, including H&E-stained tissue evaluation and mitotic index estimation.
• Microbiology labs performing Gram staining interpretation, yeast/bacterial morphology assessment, and motility analysis.
• Cell biology teaching modules involving live-cell observation using phase contrast (with WB-X series phase objectives) or darkfield illumination.
• Quality assurance in biomanufacturing settings for raw material inspection (e.g., cell culture reagents, serum clarity checks).
• Botanical and zoological specimen documentation, including pollen grain morphology, diatom identification, and insect wing venation analysis.
• Environmental monitoring applications such as plankton enumeration and activated sludge floc characterization in wastewater treatment labs.

FAQ

Is the BS200 compatible with digital cameras?
Yes—via C-mount adapters (SX2, SX3, SX4) or DSLR interfaces (SDF1, SX10), supporting both scientific CMOS sensors and consumer-grade mirrorless bodies.
Does the microscope support Köhler illumination?
Yes—the NA 1.25 Abbe condenser includes field and aperture diaphragm controls, enabling full Köhler alignment per ISO 8578 procedures.
Can oil immersion be performed safely with the 100X objective?
Yes—the spring-loaded 100X objective incorporates protective retractable front lens housing and is rated for standard cedarwood or synthetic immersion oils (e.g., DS BZ-0027).
What is the maximum usable magnification with standard eyepieces?
With WF10X eyepieces and 100X oil objective, total magnification is 1000×—within the practical resolution limit (~0.2 µm) of visible-light optics under optimal conditions.
Are replacement bulbs and fuses included?
Standard halogen bulb (BZ-0022) and fuse (BZ-0023) are supplied; LED variants (DQL1-1000, DQL1-0092) require separate ordering.