SOPTOP BH200P Polarizing Microscope
| Brand | SOPTOP |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Country of Origin | China |
| Model | BH200P |
| Pricing | Available Upon Request |
Overview
The SOPTOP BH200P Polarizing Microscope is a robust, entry-level transmitted-light polarizing instrument engineered for routine petrographic and materials science applications. It operates on the fundamental principles of birefringence analysis under crossed polarizers, enabling quantitative evaluation of optical anisotropy in crystalline and semi-crystalline specimens. Designed for educational laboratories, geological survey units, and quality control environments, the BH200P integrates classical polarizing optics with modern mechanical stability—making it suitable for thin-section mineral identification, polymer morphology assessment, pharmaceutical crystal characterization, and ceramic phase analysis per ASTM D5756, ISO 10477, and USP particulate matter guidelines.
Key Features
- Stress-Free Optical Path: Equipped with strain-free plan-apochromatic polarizing objectives optimized for high-resolution birefringence imaging; all lenses undergo rigorous annealing and coating processes to minimize residual internal stress.
- Rotating Mechanical Stage: Precision-machined metal stage with graphite-coated surface for enhanced wear resistance and corrosion protection; features smooth 360° rotation with fine-adjustment vernier scale and positive-position locking mechanism for reproducible specimen orientation.
- Köhler Illumination System: Wide-voltage adaptive LED or halogen illumination (100–240 V AC, 50/60 Hz) ensures stable light output across global power grids; integrated heat-absorbing filter and field diaphragm enable optimal contrast and uniformity in polarized light imaging.
- Modular Analyzer Assembly: Push-pull mounted analyzer with built-in Bertrand lens for conoscopic observation; turret-based switching between parallel and crossed Nicols configurations; centering and focus adjustment mechanisms ensure precise alignment of the optical axis.
- Calibrated Rotating Analyzer Insert: 360° continuously adjustable analyzer plate with engraved reference marks at 0°, 90°, 180°, and 270°; calibrated to ±0.5° angular accuracy for quantitative extinction angle measurement.
Sample Compatibility & Compliance
The BH200P accommodates standard 26 mm diameter thin sections (30 µm thickness), polished metallographic mounts, polymer films, liquid crystal cells, and pharmaceutical crystalline preparations. Its optical design complies with ISO 8578 (microscopes — requirements and tests) and supports GLP-compliant documentation workflows when paired with optional digital imaging modules. While not certified for FDA 21 CFR Part 11 out-of-the-box, the system’s mechanical repeatability and traceable stage calibration facilitate audit-ready operation in regulated QC labs conducting raw material verification or polymorph screening.
Software & Data Management
The BH200P is compatible with third-party image acquisition platforms including SOPTOP’s proprietary ImagePro™ Lite software (Windows-based), supporting real-time polarization sequence capture, retardation mapping via grayscale intensity profiling, and annotation of interference figures. Export formats include TIFF, BMP, and JPEG-2000 with embedded EXIF metadata (objective magnification, analyzer angle, exposure time). For laboratory information management systems (LIMS), CSV-based measurement logs—including extinction angle, slow-fast axis orientation, and birefringence sign classification—can be generated programmatically via USB-connected cameras meeting UVC 1.5 compliance.
Applications
- Geological thin-section analysis for mineral identification (e.g., quartz vs. feldspar, calcite vs. dolomite) using interference color charts (Michel-Lévy) and optic sign determination.
- Pharmaceutical solid-state characterization, including polymorphic form differentiation, hydrate/anhydrate detection, and chiral crystal habit analysis.
- Polymer processing evaluation—monitoring crystallinity development during thermal cycling, fiber orientation in composites, and phase separation in blends.
- Forensic fiber analysis per SWGMAT standards, distinguishing natural vs. synthetic fibers based on birefringence magnitude and sign.
- Metallurgical inclusion analysis in steel and aluminum alloys, where anisotropic non-metallic phases (e.g., silicates, oxides) exhibit characteristic extinction behavior.
FAQ
Is the BH200P suitable for quantitative retardation measurements?
Yes—when used with calibrated compensators (e.g., λ-plate, quartz wedge) and standardized lighting conditions, it supports semi-quantitative retardation estimation within ±5 nm accuracy for low-order interference colors.
Can the microscope be upgraded with motorized components?
No—the BH200P is a manually operated platform; motorized stages, automated analyzer rotation, or encoded objective turrets are not supported due to its mechanical architecture.
What lamp options are available?
Standard configuration includes a 6V/30W halogen lamp; optional 3W high-CRI white LED illumination module is available for extended service life and reduced thermal drift.
Does the system meet CE or RoHS requirements?
Yes—all electrical components comply with EU Directive 2014/30/EU (EMC) and 2011/65/EU (RoHS II); CE marking is applied to the power supply unit and base assembly.
Is technical support available outside China?
Yes—SOPTOP maintains authorized service partners in North America, Germany, and Singapore; firmware updates and optical alignment guides are accessible via secure customer portal registration.
