YXQ-LS-75G Vertical Steam Sterilizer

Overview

The YXQ-LS-75G Vertical Steam Sterilizer is a fully automated, microprocessor-controlled Class B gravity displacement and vacuum-assisted steam sterilization system designed for routine sterilization and post-cycle drying of laboratory and pathology instruments, glassware, culture media, surgical tools, and porous loads in academic, clinical, and industrial life science environments. Engineered for precision and repeatability, it operates on saturated steam under controlled pressure and temperature conditions—adhering to the fundamental principles of moist heat sterilization defined in ISO 17665-1 and EN 285. Its vertical configuration optimizes floor space while enabling efficient chamber loading and unloading. The unit integrates dual-phase operation: first, steam penetration and microbial inactivation via sustained exposure at temperatures between 109 °C and 135 °C; second, active drying using internal convection and residual heat recovery, eliminating moisture retention that could compromise sterility assurance or promote recontamination during storage.

Key Features

• Automated cycle control with integrated drying function—enabling complete sterilization + drying in a single uninterrupted sequence
• Handwheel-operated fast-opening door with mechanical safety interlock compliant with China’s Pressure Vessel Safety Technical Supervision Regulations (Article 49)
• Double-walled stainless steel construction: SUS304 inner chamber and outer casing—resistant to corrosion from repeated exposure to steam, condensate, and common disinfectants
• Self-sealing silicone gasket with auto-expansion technology ensures consistent chamber sealing across thermal cycles
• Intelligent cold-air purge system: automatic pre-vacuum air removal prior to sterilization phase to enhance steam penetration into porous and hollow loads
• Multi-layer safety architecture: overpressure relief valve (0.25 MPa design limit), low-water-level detection with audible/visual alarm, dry-run prevention, and independent overtemperature cutoff
• Programmable parameters: sterilization time (4–120 min), temperature setpoint (109–135 °C), and drying duration (30–240 min)
• Internal recirculating exhaust with 3-L condensate collection bottle minimizes ambient humidity and improves lab ventilation efficiency
• Auto-fill water reservoir with level monitoring and fault-triggered shutdown logic
• End-of-cycle acoustic alert and automatic power-down to reduce energy consumption and operator oversight requirements

Sample Compatibility & Compliance

The YXQ-LS-75G accommodates a broad range of load types, including wrapped and unwrapped instruments, textile packs, rubber tubing, pipette tips, Petri dishes, agar plates, and histology cassettes. Its chamber geometry (Ø350 × 625 mm) and dual-tier basket system (Ø360 × 280 mm × 2) support uniform steam distribution and validated load configurations per ISO 11140-1 and AAMI ST79 Annex D. While not certified to EU CE/MDR or FDA 510(k) out-of-the-box, the system meets essential safety and performance criteria aligned with GB 8599–2008 (Chinese national standard for large steam sterilizers) and provides traceable operational logs suitable for GLP-compliant documentation when paired with external audit-ready data logging. Optional validation accessories—including thermocouple ports and biological indicator holders—are available to support IQ/OQ/PQ protocols required for GMP-regulated pathology labs.

Software & Data Management

The embedded microcontroller delivers real-time monitoring of chamber temperature, pressure, elapsed time, and phase status (pre-heat, sterilize, exhaust, dry). All cycle parameters are stored internally for up to 100 runs with timestamping. Though the base model lacks Ethernet or USB export capability, its event log supports manual review via front-panel LCD navigation and printed record generation via optional thermal printer integration. For laboratories requiring electronic records compliance (e.g., FDA 21 CFR Part 11), third-party data acquisition modules can be interfaced to capture raw sensor outputs and generate ALCOA+–compliant audit trails. Firmware updates are performed locally via secure SD card—ensuring version control and regulatory traceability without cloud dependency.

Applications

This sterilizer serves core functions across pathology laboratories, biomedical research facilities, veterinary clinics, and pharmaceutical QC units. Typical use cases include: terminal sterilization of tissue processing consumables (e.g., embedding cassettes, forceps, blade holders); preparation of sterile saline and nutrient broths for microbiological assays; decontamination of biohazardous waste prior to autoclave-compatible disposal; and conditioning of porous surgical textiles used in histopathology specimen handling. Its 75-L capacity enables batch processing of high-volume instrument sets without compromising cycle consistency—critical for labs performing >20 daily sterilization runs under ISO 13485 quality management systems.

FAQ

What sterilization standards does the YXQ-LS-75G comply with?

It conforms to GB 8599–2008 and incorporates design elements aligned with ISO 17665-1 for process validation. Users must perform site-specific qualification (IQ/OQ/PQ) to demonstrate equivalence to EN 285 or AAMI ST79 in regulated settings.

Can this unit sterilize wrapped porous loads?

Yes—the automatic cold-air purge and extended dwell time at 134 °C enable effective sterilization of wrapped textile packs and hollow devices, provided load configuration follows validated placement guidelines.

Is the drying function sufficient for immediate instrument reuse?

Drying performance depends on load density and material composition. For rapid turnaround, users should verify residual moisture content (<1% w/w) via gravimetric testing before critical applications.

Does the system support remote monitoring or network connectivity?

No native Ethernet or Wi-Fi interface is included; however, analog output signals (0–10 V or 4–20 mA) are available for integration with building management systems or centralized lab monitoring platforms.

What maintenance intervals are recommended?

Daily: chamber wipe-down and gasket inspection. Quarterly: safety valve calibration and drain line cleaning. Annually: full pressure vessel inspection by certified ASME or GB-compliant third-party agency.