BOXUN YXQ-LB-100SII Vertical Steam Sterilizer

Overview

The BOXUN YXQ-LB-100SII Vertical Steam Sterilizer is a CE-compliant, microprocessor-controlled Class B autoclave engineered for reliable, repeatable moist-heat sterilization in laboratory, clinical, and research environments. It operates on the fundamental principle of saturated steam under pressure—leveraging the thermodynamic properties of water vapor at elevated temperatures to achieve microbial lethality. At 121 °C (200 kPa) or 135 °C (0.22 MPa), the unit delivers validated thermal death kinetics compliant with ISO 17665-1 (Sterilization of health care products — Moist heat) and aligns with core requirements of EN 285 (Large steam sterilizers) for cycle reproducibility and chamber uniformity. Designed for routine sterilization of wrapped and unwrapped instruments, culture media, glassware, textiles, and liquid preparations, the YXQ-LB-100SII integrates mechanical safety interlocks and real-time parameter monitoring to support GLP-compliant workflows and internal quality assurance protocols.

Key Features

• Vertical chamber architecture with 100 L usable volume—optimized for space-constrained labs while accommodating standard instrument trays and stacked media bottles.
• SUS304 stainless steel construction throughout: chamber, jacket, door, and baskets—resistant to corrosion from repeated exposure to condensate, alkalis, and disinfectant residues.
• Intelligent microprocessor controller with digital display, programmable timer (0–120 min), and pre-set cycle memory for common load types (liquids, solids, porous loads).
• Self-tightening silicone sealing gasket that expands under steam pressure—ensuring leak-free operation without manual torque adjustment.
• Dual-safety pressure interlock system: door remains mechanically locked until chamber pressure drops below 0.02 MPa; independent overpressure relief valve set at 0.25 MPa design limit.
• Automated cold-air purge sequence prior to pressurization—eliminates non-condensable gases that inhibit steam penetration and compromise sterilization efficacy.
• Comprehensive thermal protection: redundant temperature sensors trigger cutoff if chamber exceeds 138 °C; low-water-level detection halts heating before dry-out.
• Audible end-of-cycle notification and integrated 6-mm process test port for thermocouple insertion during validation studies (e.g., temperature mapping per ISO 13485 Annex A).

Sample Compatibility & Compliance

The YXQ-LB-100SII accommodates heterogeneous loads including surgical kits, Petri dishes, Erlenmeyer flasks (up to 1 L), cotton gauze packs, and agar-containing media solutions. Its chamber geometry supports uniform steam circulation verified by thermocouple mapping across three axial planes (top/mid/bottom). The unit meets essential safety and performance criteria outlined in GB 8599–2008 (Chinese national standard for large steam sterilizers) and incorporates fail-safes consistent with IEC 61010-1 for laboratory electrical equipment. While not pre-certified to FDA 510(k) or EU MDR Annex I, its design basis—including traceable sensor calibration paths, audit-ready event logging (when paired with optional printer), and documented cycle parameters—facilitates internal IQ/OQ validation and third-party verification per ISO 13485 or CLIA requirements.

Software & Data Management

The embedded controller records cycle start time, setpoint temperature/pressure, actual chamber readings (sampled every 5 s), duration, and fault codes. All data are retained in non-volatile memory for ≥1,000 cycles. When equipped with the optional thermal printer, the system generates timestamped hardcopy reports containing operator ID (manual entry), cycle number, load type, and pass/fail status based on time-at-temperature thresholds. No proprietary software or USB interface is provided; however, printed outputs comply with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) for regulatory review. Exportable CSV or PDF formats require external documentation systems.

Applications

• Routine sterilization of reusable stainless-steel instruments and rubber tubing in university teaching labs and veterinary clinics.
• Preparation of microbiological growth media (e.g., nutrient broth, LB agar) without caramelization or pH drift—enabled by slow-cool liquid cycles with pressure-assisted venting.
• Decontamination of biohazardous waste (BSL-2 compliant loads) prior to autoclave validation or off-site disposal.
• Processing of porous materials such as surgical drapes and filter membranes where steam penetration depth must exceed 10 cm—validated using Bowie-Dick test packs.
• Supporting ISO/IEC 17025-accredited testing labs requiring documented sterilization logs for reference material handling.

FAQ

What is the maximum allowable fill volume for liquid loads?
For safe operation, liquid containers should occupy no more than 75% of chamber volume and be placed upright with loose caps. Total liquid mass must not exceed 70 L to prevent boil-over during heating.
Does this model support vacuum-assisted air removal?
No—the YXQ-LB-100SII relies on gravity displacement (pre-vacuum not implemented). It is classified as a Type N (non-porous load only) sterilizer per EN 285; porous or wrapped loads require extended exposure times and careful load configuration.
Can the sterilizer be integrated into a building’s central steam supply?
No—it is electrically heated and generates steam internally via immersion heaters. Connection to external steam lines is neither supported nor recommended.
Is calibration documentation included with shipment?
Factory calibration certificates for temperature and pressure sensors are provided. Users must perform periodic verification (e.g., annually) using NIST-traceable references per ISO/IEC 17025 Clause 6.6.
What maintenance intervals are recommended?
Daily: inspect door seal integrity and drain strainer. Quarterly: clean chamber jacket, verify safety valve function. Annually: full sensor recalibration and door hinge lubrication per maintenance log template supplied in the manual.