BOXUN YXQ-LB-75SII Vertical Steam Sterilizer

Overview

The BOXUN YXQ-LB-75SII Vertical Steam Sterilizer is a fully self-contained, microprocessor-controlled autoclave engineered for reliable saturated steam sterilization in laboratory, clinical, and research environments. It operates on the principle of moist heat sterilization—utilizing pressurized saturated steam at elevated temperatures (up to 135 °C) to achieve microbial inactivation through protein denaturation and nucleic acid disruption. Designed to meet fundamental requirements for sterility assurance in non-critical and semi-critical applications, this unit complies with internationally recognized sterilization process fundamentals outlined in ISO 17665-1 (Sterilization of health care products — Moist heat — Part 1: Requirements for the development, validation and routine control of a sterilization process for medical devices) and supports alignment with GLP-compliant workflows. Its vertical orientation optimizes floor space utilization while maintaining sufficient chamber volume (75 L) for processing standard laboratory loads—including wrapped instruments, glassware, liquid media, textiles, and porous materials.

Key Features

• Vertical chamber design with stainless steel (SUS304) construction for inner chamber, outer jacket, and dual-tier baskets—ensuring long-term resistance to corrosion from repeated steam exposure, alkaline cleaning agents, and biological residues.
• Intelligent microcomputer control system with digital display of real-time temperature, pressure, and remaining cycle time; programmable sterilization cycles (0–120 minutes) with adjustable hold times and ramp profiles.
• Integrated safety interlock system: mechanical and electronic door-locking mechanism prevents opening under pressure; automatic pressure release valve activates at 0.25 MPa design limit; overtemperature cutoff interrupts heating if sensor readings exceed 138 °C.
• Self-venting cold-air purge function initiates automatically at cycle start, ensuring complete air removal prior to steam saturation—critical for achieving uniform thermal penetration and eliminating cold spots.
• Autonomous water-level monitoring with audible and visual low-water alarm; system halts operation and disables heating if water falls below operational threshold, preventing dry-heating damage.
• Self-sealing silicone gasket expands under steam pressure to ensure leak-tight integrity without manual torque adjustment; eliminates user variability in sealing consistency.
• Audible end-of-cycle notification and optional RS232 interface for external printer integration (optional accessory) support documentation traceability in regulated settings.

Sample Compatibility & Compliance

The YXQ-LB-75SII accommodates a broad range of load types including surgical instruments (wrapped or unwrapped), cotton gauze and drapes, reusable plasticware, borosilicate glass containers, and aqueous liquid media (with gravity-displacement or slow exhaust modes). Chamber dimensions (Ø400 mm × 720 mm) and dual 280-mm-deep baskets (Ø360 mm) permit flexible stacking and airflow management. While not certified for terminal sterilization of implantables per ISO 11135 or ISO 11137, the unit satisfies routine decontamination and pre-sterilization requirements aligned with WHO guidelines for laboratory biosafety level 2 (BSL-2) facilities and CDC-recommended practices for reusable equipment reprocessing. All safety mechanisms conform to EN 61010-1 (Electrical Safety for Laboratory Equipment) and incorporate fail-safe redundancy per IEC 62304 software lifecycle principles.

Software & Data Management

The embedded controller records cycle parameters—including start time, setpoint temperature/pressure, actual measured values, duration, and fault codes—in non-volatile memory. Cycle logs are retained for ≥100 runs and can be reviewed locally via the front-panel interface. Optional serial output enables connection to external data loggers or label printers for hard-copy record generation. Though the base configuration does not include FDA 21 CFR Part 11-compliant audit trail or electronic signature functionality, the system architecture supports manual documentation protocols compatible with ISO/IEC 17025 accreditation requirements for testing and calibration laboratories.

Applications

• Routine sterilization of microbiological culture media, buffers, and saline solutions in academic and industrial R&D labs.
• Decontamination of contaminated PPE, pipette tips, and lab consumables in teaching laboratories and diagnostic support units.
• Pre-sterilization treatment of surgical tools and dental instruments in outpatient clinics and veterinary practices.
• Validation of steam penetration in porous loads during method development for internal sterilization SOPs.
• Supporting quality control workflows in pharmaceutical manufacturing where non-product-contact equipment requires periodic bioburden reduction.

FAQ

What is the maximum allowable operating pressure and temperature?
The YXQ-LB-75SII has a maximum working pressure of 0.22 MPa and a maximum working temperature of 135 °C, with design limits set at 0.25 MPa and 138 °C respectively.
Does the unit support sterilization of liquids?
Yes—when configured with slow exhaust mode, it safely processes aqueous solutions up to 5 L per container, minimizing boil-over risk through controlled depressurization.
Is validation documentation provided with the instrument?
Factory-installed IQ/OQ documentation templates are included; users are responsible for site-specific PQ execution per their institutional quality management system.
Can the sterilizer be integrated into a building’s steam supply network?
No—this is an electrically heated, self-generating steam system requiring only standard single-phase 220 V power and a dedicated water fill port.
What maintenance intervals are recommended?
Daily: chamber wipe-down and gasket inspection; monthly: safety valve functional test and drain line flush; annually: full calibration verification by authorized service technician.