YXQ-LS-70A Vertical Steam Sterilizer
| Origin | Shanghai, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | YXQ-LS-70A |
| Chamber Volume | 75 L |
| Max Operating Temperature | 135 °C |
| Max Operating Pressure | 0.22 MPa |
| Power Rating | 3.5 kW |
| Voltage/Frequency | 220 V ±10%, 50 Hz ±2% |
| External Dimensions (W×D×H) | 600 × 500 × 1130 mm |
| Internal Chamber Diameter × Height | Ø400 × 570 mm |
| Basket Dimensions (Ø × H × Qty) | Ø360 × 280 mm × 2 units |
| Sterilization Cycle Modes | Standard Exhaust / Pulse Exhaust / No-Exhaust |
| Control System | Microprocessor-based Intelligent Controller |
| Safety Compliance | Meets PRC Pressure Vessel Safety Technical Supervision Regulations (Article 49) |
Overview
The YXQ-LS-70A Vertical Steam Sterilizer is a CE-compliant, microprocessor-controlled laboratory-grade autoclave engineered for reliable thermal sterilization of heat-stable instruments, glassware, culture media, and porous loads in pathology labs, clinical research facilities, and academic bioscience departments. It operates on the principle of saturated steam under positive pressure—leveraging the thermodynamic properties of water vapor at elevated temperatures (up to 135 °C) to achieve microbial inactivation through protein denaturation and nucleic acid disruption. Designed for routine batch processing in environments requiring ISO 13485-aligned workflows, this unit integrates ASME-equivalent pressure containment architecture with fail-safe mechanical and electronic interlocks, ensuring compliance with national pressure vessel safety standards (PRC TSG 21-2016). Its vertical orientation optimizes floor space utilization without compromising chamber volume or thermal uniformity across the 75 L load capacity.
Key Features
- Handwheel-operated quick-opening door with dual-mode safety interlock: physically prevents door opening when internal pressure exceeds 0.02 MPa and automatically disengages only after full depressurization and temperature drop below 80 °C—fully compliant with Article 49 of the PRC Pressure Vessel Safety Technical Supervision Regulations.
- Double-layer stainless steel construction: outer shell and inner chamber fabricated from SUS304 austenitic stainless steel (ASTM A240), offering resistance to chloride-induced pitting, organic acid corrosion, and repeated exposure to condensate-rich steam environments.
- Self-sealing silicone gasket system with auto-expansion technology ensures consistent radial compression during pressurization, eliminating manual torque adjustment and reducing seal wear over extended service life.
- Microcontroller-based operation with real-time monitoring of chamber temperature, pressure, elapsed time, and water level; supports three programmable sterilization cycles: standard gravity displacement, pulse vacuum-assisted air removal, and no-exhaust hold mode for liquid media sterilization.
- Integrated cold-air purge function initiates automatically at cycle start to evacuate non-condensable gases—critical for achieving uniform steam penetration in wrapped instrument packs and porous textile loads.
- Dual-level water level detection with audible/visual alarm and automatic power cutoff upon low-water condition; built-in condensate drainage pump activates post-cycle to evacuate residual water from jacket and chamber base.
Sample Compatibility & Compliance
The YXQ-LS-70A accommodates standard pathology lab loads including stainless steel surgical instruments, borosilicate glass Petri dishes, autoclavable polymer containers (e.g., polypropylene centrifuge tubes), and pre-packed tissue cassettes. It supports sterilization of both solid and liquid media—including nutrient broths and agar-based preparations—via its no-exhaust mode, which minimizes thermal shock and boil-over risk. The unit conforms to GB 8599–2008 (Chinese National Standard for Large Steam Sterilizers), aligns with key elements of EN 285:2015 (Steam Sterilizers – Large Sterilizers), and meets functional requirements referenced in ISO 17665-1:2019 for moist heat sterilization process validation. While not FDA 510(k)-cleared, its design basis supports GLP-compliant documentation when integrated with external data loggers meeting 21 CFR Part 11 audit trail requirements.
Software & Data Management
This model features an embedded 4.3-inch TFT LCD interface with intuitive icon-driven navigation and password-protected parameter configuration. All cycle logs—including start time, setpoints, actual temperature/pressure profiles, fault codes, and operator ID—are stored internally for up to 1,000 cycles. Data export is supported via USB 2.0 port (FAT32 formatted drive required) in CSV format for traceability and QA review. Optional RS-485 serial interface enables integration into centralized laboratory equipment monitoring systems using Modbus RTU protocol. Cycle validation reports may be generated externally using third-party thermal mapping software compatible with time-stamped temperature log exports.
Applications
Primary use cases include terminal sterilization of reusable histology tools (microtome blades, forceps, embedding cassettes), decontamination of biohazardous waste prior to disposal, preparation of sterile saline and buffer solutions for IHC staining, and conditioning of paraffin-embedding molds and wax dispensers. In teaching laboratories, it serves as a platform for hands-on instruction in sterilization kinetics, F0 calculation, and validation protocol development per ISO 14937. Its 75 L chamber accommodates two Ø360 mm × 280 mm stainless steel baskets—optimized for high-throughput processing of tissue processor accessories and specimen transport containers.
FAQ
What is the maximum allowable working pressure and corresponding saturation temperature?
The YXQ-LS-70A is rated for a maximum operating pressure of 0.22 MPa (gauge), corresponding to a saturated steam temperature of 134 °C per IAPWS-IF97 steam tables.
Does the unit support validation with biological indicators (BIs)?
Yes—its documented thermal uniformity and reproducible cycle delivery enable qualification using standard Geobacillus stearothermophilus spore strips (e.g., ATCC 7953) placed at geometrically defined challenge locations per ISO 11140-1.
Can it be used for sterilizing liquids in sealed bottles?
Only in “No-Exhaust” mode with appropriate pressure-relief venting; users must implement validated ramp-hold-cool profiles to prevent container rupture and ensure F0 ≥ 12 for pharmaceutical-grade media.
Is routine maintenance covered under the standard warranty?
The 12-month limited warranty covers parts and labor for defects in materials and workmanship; preventive maintenance—including gasket replacement, safety valve calibration, and chamber leak testing—is recommended quarterly per manufacturer guidelines.
How is compliance with pressure vessel regulations verified during installation?
Installation requires verification of anchoring integrity, electrical grounding continuity (<5 Ω), and steam supply line pressure regulation (0.3–0.4 MPa inlet); final commissioning includes hydrostatic test at 1.5× MAWP and operational test per TSG 21-2016 Annex C.
