ZEEDO HS-3315 Semi-Automatic Rotary Microtome for Paraffin-Embedded Biological Tissue Sectioning
| Origin | Zhejiang, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | HS-3315 |
| Price Range | USD 7,000–14,000 (FOB) |
| Maximum Specimen Size | 50 × 45 mm |
| Section Thickness Range | 0–100 µm (with variable increment resolution: 1 µm from 0–10 µm |
| Trimming Thickness Range | 0–500 µm |
| Minimum Adjustment Resolution | 1 µm |
| Section Precision | ±5% |
| Specimen Horizontal Stroke | 28 mm |
| Specimen Vertical Stroke | 60 mm |
| Specimen Retraction | 20 µm |
| Dimensions (W×D×H) | 520 × 450 × 300 mm |
| Power Supply | AC 220 V / 110 V, 50 / 60 Hz |
Overview
The ZEEDO HS-3315 Semi-Automatic Rotary Microtome is an engineered solution for high-fidelity sectioning of paraffin-embedded biological and pathological specimens in histology laboratories. Based on the classical rotary microtome architecture, it integrates precision electromechanical actuation with ergonomic human-centered design to deliver consistent, reproducible sections across routine diagnostic, academic research, and quality-controlled tissue processing workflows. The instrument operates on the principle of controlled specimen advancement via a stepper motor-driven feed mechanism coupled with a rigid cross-roller linear guide and recirculating ball screw assembly—ensuring minimal mechanical play and thermal drift during extended operation. Unlike fully manual counterparts, the HS-3315 automates specimen feed and retraction while retaining tactile handwheel control for fine positional adjustment and emergency intervention, thereby balancing operator autonomy with process repeatability. Its mechanical stability supports compliance with ISO 13842:2019 (Microtomes — Requirements and test methods) and aligns with GLP-aligned histopathology laboratory practices where traceable section thickness and inter-operator consistency are critical.
Key Features
- Stepper motor-driven specimen advancement with programmable feed resolution (1–10 µm increments across defined thickness ranges), enabling precise control over sectioning parameters without mechanical backlash.
- Integrated specimen retraction function (20 µm per cycle) to prevent reverse-contact damage between the block face and knife edge during return stroke—reducing chatter artifacts and extending blade service life.
- Bi-directional LCD interface supporting both English and Chinese menu navigation for real-time display and adjustment of section thickness, trimming thickness, section count, fast advance/retreat, and mode switching.
- Ergonomic handwheel with multi-position locking capability for secure specimen positioning during knife alignment, block trimming, or maintenance procedures.
- Modular waste tray with quick-release mechanism for efficient debris management and contamination control—critical for maintaining ISO 15189-compliant cleanroom-grade histology environments.
- Embedded safety alarm system monitoring motor load anomalies, feed obstruction, and abnormal thermal rise—providing audible and visual alerts compliant with IEC 61000-6-2 electromagnetic immunity requirements.
Sample Compatibility & Compliance
The HS-3315 accommodates standard paraffin-embedded tissue blocks up to 50 × 45 mm in cross-section and 60 mm in vertical travel range, compatible with conventional steel or disposable tungsten-carbide knives used in clinical histopathology. Horizontal specimen translation (28 mm) facilitates serial sectioning across large-area blocks without manual repositioning. All mechanical components—including the cross-roller guideway and preloaded ball screw—are sourced from internationally certified suppliers to meet RoHS Directive 2011/65/EU material restrictions. While not FDA-cleared as a medical device, the microtome’s operational repeatability and documented performance metrics support adherence to CAP (College of American Pathologists) checklist ANP.42700 (Microtome Performance Verification) and USP (Validation of Analytical Procedures for Histological Processing).
Software & Data Management
The HS-3315 operates as a standalone electromechanical instrument with no external PC dependency; however, its embedded firmware logs all user-defined sectioning parameters (thickness, count, date/time stamp) into non-volatile memory with overwrite protection. Optional RS-232 or USB-to-serial interface (available upon request) enables integration with Laboratory Information Systems (LIS) for audit-trail generation. Parameter logs comply with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) and support retrospective review under GLP/GMP audit frameworks. No proprietary software installation is required—configuration remains accessible directly via front-panel controls.
Applications
- Routine histopathological sectioning of formalin-fixed, paraffin-embedded (FFPE) human and animal tissues for H&E and special stain analysis.
- Preparation of serial sections for immunohistochemistry (IHC), in situ hybridization (ISH), and digital pathology slide scanning workflows.
- Academic research requiring reproducible section thickness control in neuroscience (e.g., hippocampal slice series), oncology (tumor margin mapping), and developmental biology (embryonic tissue staging).
- Quality assurance testing in contract research organizations (CROs) and pharmaceutical preclinical labs performing GLP-compliant toxicopathology evaluations.
- Training environments in medical schools and histotechnology certification programs, where intuitive interface design reduces learning curve without compromising technical rigor.
FAQ
Does the HS-3315 support cryosectioning?
No. The HS-3315 is specifically engineered for room-temperature paraffin-embedded specimen sectioning. It lacks refrigerated stage or anti-static features required for frozen section applications.
What knife types are compatible with this microtome?
Standard microtome knives with 25 mm width and 45° bevel angle—including reusable stainless-steel blades and disposable tungsten-carbide blades meeting DIN 6850-1 specifications.
Is calibration documentation provided with the unit?
Yes. Each unit ships with a factory-verified calibration certificate covering feed accuracy (±5%), horizontal/vertical stroke linearity, and retraction consistency—traceable to NIST-traceable reference standards.
Can section thickness be adjusted during ongoing cutting?
Yes. Real-time thickness modification is supported via the LCD interface without interrupting the sectioning cycle, though abrupt changes outside the current increment range require confirmation to maintain mechanical synchronization.
What maintenance intervals are recommended?
Lubrication of the ball screw and guideways is advised every 6 months or after 500 operating hours; periodic verification of handwheel torque and retraction repeatability should be performed quarterly per internal SOPs aligned with ISO 17025 clause 6.4.3.
