RWD S712 Rotary Microtome
| Brand | RWD |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | S712 |
| Quotation | Upon Request |
| Section Thickness Range | 0.5 – 100 µm |
| Maximum Specimen Size | 60 × 50 × 40 mm |
| Horizontal Travel | 28 mm |
| Vertical Travel | 70 mm |
Overview
The RWD S712 Rotary Microtome is a precision-engineered laboratory instrument designed for consistent, high-fidelity sectioning of paraffin-embedded biological specimens. Built upon the proven architecture of the S710 series, the S712 integrates motorized specimen advancement with dual-mode operation—retaining manual control fidelity while enabling repeatable automated feed. Its operational principle relies on a rotary motion-driven blade cutting mechanism, where the specimen advances incrementally toward a fixed steel or disposable blade during each rotation cycle. This classical microtomy method ensures compatibility with standard histological workflows and adherence to internationally recognized tissue processing protocols (e.g., ISO 13807:2019, ASTM E1192-20). The system is engineered for use in clinical pathology labs, academic research facilities, and pharmaceutical preclinical departments requiring reproducible 2–5 µm sections for H&E, IHC, and special staining.
Key Features
- Hybrid Feed System: Combines a five-phase high-resolution stepping motor for precise motorized advancement (0.5 µm resolution) with a calibrated fine-tuning handwheel and optional external control box—supporting both ergonomic manual slicing and programmable automated runs.
- Precision Mechanical Architecture: Features cross-roller linear guides and a hardened stainless-steel lead screw, coupled with an aerospace-grade aluminum horizontal carriage. This configuration minimizes play and thermal drift, delivering sub-micron repeatability across extended operation cycles.
- Rigid龙门 Frame Design: A reinforced gantry structure with high-strength alloy mounting interfaces maintains alignment stability under load—enabling clean sectioning of calcified, decalcified, or fibrous tissues without chatter or compression artifacts.
- Adjustable Knife Holder: Offers lateral translation with <10 µm positional deviation after repositioning; engraved angular scales on the knife base facilitate rapid, traceable blade alignment and multi-instrument angle synchronization.
- Intuitive Human-Machine Interface: Integrated 5-inch capacitive touchscreen displays real-time feed parameters, section count, error logs, and user-defined presets. All interface interactions are timestamped and stored locally for audit readiness.
- Dual Safety Locking System: Independent handwheel lock and arbitrary-position specimen lock engage with audible feedback; full-length blade guard and spring-assisted blade ejection mechanism reduce exposure risk during routine maintenance.
Sample Compatibility & Compliance
The S712 accommodates standard paraffin blocks up to 60 × 50 × 40 mm (L × W × H), including those mounted on proprietary metal or plastic cassettes. It supports conventional steel knives, tungsten-carbide blades, and disposable microtome blades compliant with ANSI/ISO 8549-1:2021 dimensional standards. The instrument meets CE marking requirements under Directive 2014/30/EU (EMC) and 2014/35/EU (LVD), and its mechanical design aligns with ISO 13807:2019 recommendations for microtome performance verification. While not classified as an IVD device, it is routinely deployed in GLP-compliant histopathology labs supporting FDA 21 CFR Part 11–aligned documentation systems when integrated with LIMS-compatible data export modules.
Software & Data Management
The embedded firmware supports local storage of operational history—including date/time-stamped section counts, motor stall events, calibration adjustments, and alarm triggers (e.g., overtravel, temperature anomaly). Data export is available via USB 2.0 port in CSV format for integration into laboratory information management systems (LIMS) or quality assurance dashboards. No cloud connectivity or remote access capability is included; all data remains resident on-device unless manually exported—ensuring compliance with institutional data sovereignty policies and HIPAA-aligned handling of protected health information (PHI)-adjacent metadata.
Applications
- Routine diagnostic histology in clinical pathology laboratories
- Preclinical toxicology studies requiring serial sectioning of rodent organ blocks
- Neuroscience research involving brain coronal or sagittal plane sectioning
- Quality control of tissue biobank archives with long-term reproducibility demands
- Training environments where dual manual/automated operation aids pedagogical progression
FAQ
Is the S712 compatible with cryogenic sectioning?
No—the S712 is specifically engineered for room-temperature paraffin-embedded specimens. For frozen sectioning, RWD recommends the CM1950 Cryostat series.
Can the touch screen interface be locked during active sectioning?
Yes—user-configurable screen lock mode disables touch input while preserving real-time feed display and audible alerts.
What maintenance intervals are recommended for the lead screw and guide rails?
RWD specifies lubrication every 6 months using ISO VG 22 synthetic oil; cleaning of debris from the horizontal travel path is advised after each block series.
Does the S712 support networked firmware updates?
Firmware updates are performed exclusively via USB drive; no Ethernet or Wi-Fi interface is provided.
Are replacement parts such as knife holders or specimen chucks available separately?
Yes—all mechanical subassemblies—including the precision knife holder (Part No. S712-KH), specimen chuck (S712-SC), and motorized feed module (S712-FM)—are orderable as service kits with documented interchangeability.
