XSP-8CA Dual-Eyepiece Biological Microscope

Overview

The XSP-8CA Dual-Eyepiece Biological Microscope is a robust, entry-to-mid-tier upright compound microscope engineered for routine brightfield observation in academic teaching laboratories, clinical cytology workstations, and quality control environments within biotechnology and pharmaceutical manufacturing. Designed according to ISO 10934-1 (Microscopes — Nomenclature of components) and aligned with ASTM E2877-22 (Standard Guide for Microscope Calibration and Verification), the instrument employs classical Köhler illumination geometry to ensure uniform, glare-free field illumination across all magnification levels. Its optical path integrates a fixed 45° inclined binocular head with interpupillary adjustment (55–75 mm), enabling extended user comfort during prolonged examination sessions. The mechanical stage features dual-axis coaxial controls with vernier-calibrated movement (0.1 mm resolution), supporting precise specimen repositioning without parallax shift — a critical requirement for comparative histological analysis and standardized slide screening protocols.

Key Features

• Optical System: Fully corrected achromatic objective lens set (4×, 10×, 40×S, 100×S) with anti-fungal coating and spring-loaded front elements for safe immersion oil use and accidental contact mitigation.
• Abbe Condenser (NA 1.25): Equipped with centerable iris diaphragm and interchangeable color filters (blue, green, yellow) to optimize contrast for unstained or lightly stained specimens under brightfield illumination.
• Illumination Module: Regulated 6 V / 20 W halogen lamp with integrated heat-absorbing filter and intensity control dial (0–100%), delivering stable color temperature (~3200 K) and minimal thermal drift during time-lapse visual assessment.
• Mechanical Stability: Cast aluminum base with reinforced arm and rack-and-pinion coarse/fine focusing system (coarse: 30 mm travel; fine: 0.002 mm graduation), ensuring high reproducibility in focus depth positioning across daily operational cycles.
• Ergonomic Design: Interchangeable wide-field WF10× (18 mm field number) and Huygens H16× eyepieces, both threaded for optional reticle insertion and compatible with standard 23.2 mm diameter measuring oculars.

Sample Compatibility & Compliance

The XSP-8CA accommodates standard 1 mm-thick glass microscope slides (76 × 26 mm) and circular cover slips (18 mm and 22 mm diameters). Its stage aperture (140 mm × 130 mm) supports multi-well tissue culture plates (6-, 12-, 24-well formats) when used with optional low-profile stage adapters. The microscope meets IEC 61010-1:2010 safety requirements for laboratory electrical equipment and conforms to GB/T 29869–2013 (Chinese national standard for biological microscopes). While not certified for GLP/GMP production environments, it satisfies documentation and calibration traceability requirements for ISO/IEC 17025-accredited testing laboratories when paired with external verification tools (e.g., stage micrometer, NIST-traceable reference slides).

Software & Data Management

The XSP-8CA is an analog optical platform without built-in digital imaging capability. However, its trinocular port (optional accessory) enables seamless integration with third-party CMOS/CCD cameras (C-mount interface, 23.2 mm flange distance). When coupled with open-architecture software such as Ocular Image Capture (v5.2+) or commercial packages compliant with FDA 21 CFR Part 11 (e.g., Olympus cellSens Standard v2.4), the system supports audit-trail-enabled image annotation, measurement logging, and export to DICOM-compliant repositories. All hardware adjustments — including condenser centering, diaphragm aperture setting, and lamp intensity — are manually calibrated and recorded per SOP-defined maintenance logs.

Applications

• Undergraduate and graduate-level histology, microbiology, and botany instruction — particularly for hematoxylin-eosin (H&E), Gram staining, and wet-mount protozoan observation.
• Clinical cytology pre-screening of Pap smears and peripheral blood films prior to digital scanning workflows.
• Raw material inspection in herbal medicine QC labs (e.g., identification of plant epidermal cells, stomatal density, trichome morphology).
• In-process verification of microbial colony morphology on agar plates during fermentation monitoring.
• Basic fluorescence compatibility via optional mercury or LED excitation modules (not included), supporting DAPI and FITC filter sets when retrofitted with appropriate dichroic mirrors.

FAQ

Is the XSP-8CA compatible with digital camera systems?
Yes — a C-mount trinocular attachment is available as an optional accessory, enabling connection to industry-standard USB 3.0 or HDMI-output cameras.
Does the microscope support oil immersion at 100× magnification?
Yes — the 100× objective is spring-loaded and specifically designed for use with Type A immersion oil (n_D = 1.515); proper clean-up protocol post-use is required to maintain lens integrity.
Can the halogen lamp be replaced with an LED module?
Yes — the lamp housing accepts commercially available 6 V DC LED retrofit kits (e.g., Motic LED6V-LED), preserving Köhler alignment and reducing thermal load on heat-sensitive specimens.
What calibration standards are recommended for routine verification?
A NIST-traceable stage micrometer (0.01 mm divisions) and resolution test target (USAF 1951) are recommended for semi-annual optical performance validation per ISO 9001 internal audit schedules.
Is technical support available outside mainland China?
Yes — authorized distributors provide remote troubleshooting, English-language service manuals, and access to factory-certified repair centers in Southeast Asia, the Middle East, and Latin America.