SOPTOP EX21 Biological Microscope

Overview

The SOPTOP EX21 Biological Microscope is an upright, infinity-corrected optical instrument engineered for routine biological observation in academic teaching laboratories, undergraduate life science courses, and entry-level research applications. It employs a Köhler illumination architecture enhanced by a fly-eye lens homogenizer to deliver uniform, glare-free field illumination across all magnifications — a critical requirement for consistent image quality in pedagogical and comparative microscopy workflows. The microscope’s optical path integrates achromatic objective lenses (standard 4×, 10×, 40×, and 100× oil immersion) with widefield plan eyepieces (10×, 22 mm field number), ensuring minimal peripheral distortion and chromatic aberration correction across the full visual field. Its rigid cast-aluminum mechanical stage and coaxial coarse/fine focusing system (2 mm coarse travel, 0.002 mm fine increment) provide stable specimen positioning and precise Z-axis control under repeated student handling.

Key Features

• Ergonomic binocular head with 30° inclination and adjustable interpupillary distance (47–75 mm), accommodating users across diverse anthropometric profiles including students wearing corrective eyewear.
• Dual-purpose LED illumination system: energy-efficient (6 V / 2 A), thermally stable, and rated for >50,000 hours of operation — eliminating filament burnout and color temperature drift associated with halogen sources.
• Continuous analog brightness control via side-mounted rotary dimmer, enabling smooth, stepless intensity modulation without abrupt luminance jumps — reducing observer fatigue during prolonged sessions.
• Integrated 20-megapixel CMOS imaging module supporting real-time Full HD (1920 × 1080) video streaming, broadcast-compatible output (HDMI/USB 3.0), and lossless static capture at native sensor resolution (5120 × 3840 pixels).
• Anti-tamper mechanical design: recessed eyepiece housings prevent incorrect reinstallation or contamination; reinforced stage clips and locking mechanisms resist unauthorized disassembly.
• Onboard cable management compartment located on rear chassis — optimizes bench space and supports GLP-aligned lab housekeeping protocols.

Sample Compatibility & Compliance

The EX21 accommodates standard glass microscope slides (76 × 26 mm) and coverslips (0.13–0.17 mm thickness) across transmitted-light modalities including brightfield, phase contrast (with optional phase condenser and annuli), simple polarized light (with analyzer and polarizer kits), and darkfield (via dedicated condenser). All optical components comply with ISO 10934-1 (Microscopes — Nomenclature of parts) and GB/T 29869–2013 (Performance requirements for optical microscopes). The LED light source meets IEC 62471 photobiological safety standards for Class 1 LED devices. Electrical design conforms to EN 61010-1 for laboratory equipment safety, and electromagnetic compatibility is certified per EN 61326-1.

Software & Data Management

The EX21 interfaces natively with SOPTOP’s proprietary imaging software suite (v5.2+), which supports time-lapse acquisition, multi-channel overlay (RGB + fluorescence simulation), measurement annotation (length, area, angle), and export in TIFF, JPEG2000, and AVI formats. Audit trail functionality logs user ID, timestamp, exposure settings, and objective selection — fulfilling basic data integrity requirements aligned with GLP documentation practices. Raw image metadata is embedded per Exif 2.31 specification, and software validation documentation is available upon request for institutional QA/QC departments.

Applications

• Undergraduate biology labs: histology slide examination, mitosis staging, protozoan motility analysis, and plant tissue sectioning.
• Veterinary and agricultural education: parasite identification (e.g., Giardia cysts, helminth ova), blood smear differential counts, and seed morphology studies.
• Quality assurance in biomanufacturing: routine verification of cell culture confluence, contamination screening (yeast/bacteria), and sterility test support.
• K–12 STEM outreach programs: durable platform for introductory microscopy modules with low maintenance overhead and intuitive interface logic.

FAQ

Is the EX21 compatible with third-party digital cameras?
Yes — the trinocular port accepts C-mount adapters (0.5× or 1× relay lenses) for integration with industrial CMOS/CCD cameras meeting ANSI/ISO C-mount specifications.
Does the microscope support oil immersion objectives?
Yes — the standard objective set includes a 100× NA 1.25 oil immersion objective, optimized for use with Type A immersion oil (n_D = 1.515) and calibrated for 0.17 mm coverslip thickness.
Can the EX21 be used for quantitative morphometric analysis?
When paired with SOPTOP’s calibration slide and software calibration wizard, the system achieves ±1.5% linear measurement repeatability across 10–100× magnifications, suitable for semi-quantitative morphometry in teaching contexts.
What maintenance intervals are recommended for educational environments?
No scheduled optical alignment is required; annual inspection of mechanical focus gears, stage movement smoothness, and LED output stability is advised per ISO/IEC 17025-aligned internal lab procedures.
Is firmware update capability available?
Yes — USB-recoverable firmware updates are distributed via SOPTOP’s secure customer portal, with version history and release notes traceable for audit purposes.