BOXUN YXQ-100G Vertical Steam Sterilizer

Overview

The BOXUN YXQ-100G Vertical Steam Sterilizer is a gravity-displacement, saturated steam-based sterilization system engineered for reliable terminal sterilization of heat-stable laboratory and clinical materials. Operating on the fundamental principle of moist heat sterilization—where microbial inactivation is achieved through irreversible denaturation of proteins and nucleic acids—the unit delivers validated lethality (F₀ ≥ 12) at 121 °C (200 kPa) or accelerated cycles at 135 °C (220 kPa). Designed for routine use in biosafety level 1–2 laboratories, quality control facilities, teaching institutions, and small-scale clinical support units, it conforms to core sterilization process requirements defined in ISO 17665-1:2017 (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 documentation practices.

Key Features

• Vertical chamber configuration with 100 L usable volume, optimized for space-constrained lab environments while maintaining ergonomic loading/unloading via front-access handwheel door
• Double-walled stainless steel construction (SUS304) for inner chamber, outer jacket, and sterilization baskets—resistant to corrosion from repeated exposure to condensate, saline solutions, and alkaline cleaning agents
• Microprocessor-controlled cycle management with real-time monitoring of chamber temperature, pressure, and elapsed time; integrated safety interlocks prevent door opening under pressure
• Automatic cold air purge function ensures complete air removal prior to pressurization, minimizing non-condensable gas pockets that compromise thermal uniformity
• Self-sealing silicone gasket system with automatic compression upon closure—eliminates manual torque calibration and reduces maintenance frequency
• Dual-mode operation: standard sterilization-only cycles and combined sterilization-drying cycles (with programmable drying phase up to 240 minutes)
• Overtemperature protection (138 °C hardware cutoff), low-water-level alarm, overpressure relief valve (set at 0.25 MPa), and dry-run prevention circuitry
• Integrated 3 L condensate collection bottle and internal recirculating exhaust path to minimize ambient humidity rise during venting

Sample Compatibility & Compliance

The YXQ-100G accommodates a broad range of load types including wrapped surgical instruments, unwrapped metal tools, glassware (e.g., pipettes, flasks), textile packs (gauze, drapes), liquid media (in vented containers), and rubber tubing. Load configurations must comply with ISO 11140-1:2014 (Chemical indicators) and EN 285:2015 (Large sterilizers) guidelines regarding pack density, orientation, and steam penetration pathways. The unit includes a standard 12 mm process monitoring port for integration with external temperature/pressure loggers or biological indicator challenge studies. While not pre-certified to FDA 510(k) or CE-IVD standards, its mechanical and control architecture meets essential requirements for Class IIa medical device sterilization per MDR Annex I (General Safety and Performance Requirements), and supports user-established validation protocols per ANSI/AAMI ST79:2023.

Software & Data Management

Cycle parameters—including setpoint temperature, target pressure, sterilization hold time, drying duration, and start time—are configured via an intuitive membrane keypad interface with LED status feedback. All active cycles generate timestamped event logs (door open/close, pressurization onset, sterilization phase entry, drying activation, completion signal) stored in non-volatile memory for ≥1,000 cycles. Optional RS232 serial output enables connection to external PCs for raw data export (CSV format); optional thermal printer attachment provides hard-copy cycle records compliant with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available). Audit trail functionality satisfies basic traceability needs for ISO/IEC 17025-accredited testing labs and internal QA audits.

Applications

• Sterilization of reusable stainless-steel instruments and aluminum trays in university teaching labs and veterinary clinics
• Terminal sterilization of agar-based microbiological media, phosphate-buffered saline (PBS), and nutrient broths in R&D settings
• Decontamination of biohazardous waste (non-sharp solids) prior to autoclave-compatible disposal pathways
• Pre-sterilization conditioning of glass vials and syringes used in formulation development
• Validation support for depyrogenation studies requiring controlled steam exposure profiles
• Complementary use with melting/holding accessory for agar plate preparation workflows (60–98 °C melt range; 40–60 °C hold range)

FAQ

What is the maximum allowable load weight for the YXQ-100G chamber?
The unit does not specify a strict mass limit; however, optimal steam penetration requires ≤70% volumetric loading. For dense instrument packs, total load should not exceed 65 kg to maintain cycle reproducibility.
Can this sterilizer be used for sterilizing liquids in sealed bottles?
No—sealed containers are prohibited due to risk of explosion. Liquids must be processed in vented vessels (e.g., bottles with loosened caps or specialized steam-permeable closures) and loaded upright with ≤75% fill volume.
Is the YXQ-100G suitable for prion decontamination protocols?
It does not meet WHO-recommended extended cycles (e.g., 134 °C for 18 minutes) required for high-risk prion inactivation. Its design envelope aligns with standard bacterial and viral spore eradication per EN 554.
Does the unit include a built-in biological indicator incubator?
No—biological indicators (e.g., Geobacillus stearothermophilus spore strips) must be incubated separately using a calibrated 56 °C incubator per ISO 11138-1.
What maintenance intervals are recommended for the safety valves and pressure transducers?
Pressure relief valves require annual third-party certification per ASME BPVC Section VIII; electronic pressure sensors should be verified quarterly against NIST-traceable deadweight testers.