SYQ-DSX-280B / YX-280A Benchtop Steam Sterilizer (Automatic Control, 18 L Capacity)

Overview

The SYQ-DSX-280B / YX-280A is a compact, benchtop steam sterilizer engineered for reliable, repeatable moist-heat sterilization of laboratory and clinical materials. Based on saturated steam under positive pressure, it operates according to the fundamental principle of thermal inactivation—where elevated temperature and controlled exposure time achieve microbial lethality via protein denaturation and nucleic acid disruption. Designed for routine sterilization of reusable instruments, glassware, culture media, textiles, and heat-stable liquids, this unit complies with internationally recognized sterilization process requirements aligned with 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 adherence to GLP and basic GMP documentation practices. Its 18 L chamber provides sufficient capacity for small-to-medium batch processing in academic labs, QC facilities, and outpatient clinical settings—without requiring dedicated utility infrastructure such as boiler-fed steam or compressed air.

Key Features

• Automatic cold-air purge cycle: Ensures rapid and complete displacement of ambient air prior to pressurization, minimizing temperature gradients and improving sterilization efficacy.
• Pressure-actuated lid interlock system: Prevents accidental opening during operation; mechanical lock engages automatically when chamber pressure exceeds 0.01 MPa and disengages only after full depressurization.
• Dry-run protection: Integrated water-level sensor halts heating if minimum fill level is not detected, preventing heater element damage and ensuring process integrity.
• Adjustable sterilization parameters: Digital timer (0–60 min) and thermostatically regulated temperature control (105–126 °C) allow customization for diverse load types—including wrapped instruments, liquid media, and porous materials.
• Self-sealing gasket design: Utilizes radial expansion under steam pressure (“self-tightening” seal) to maintain chamber integrity without manual torqueing—reducing operator dependency and wear-related leakage.
• Full 304 stainless steel construction: Chamber, door, and outer casing resist corrosion from repeated steam exposure and chemical cleaning agents, supporting long-term compliance with hygiene-critical environments.
• Dual-scale Class II pressure gauge: Provides simultaneous reading in MPa and psi, calibrated per EN 837-1 standards for traceable accuracy in pressure monitoring.

Sample Compatibility & Compliance

This sterilizer accommodates standard autoclave-compatible loads including surgical instruments, Petri dishes, pipette tips, cotton gauze, culture flasks, and aqueous solutions (e.g., nutrient broths, saline, buffer preparations). It is validated for use with wrapped and unwrapped items, though load configuration must follow AAMI ST79-recommended guidelines for steam penetration and drying efficiency. While not certified to FDA 510(k) or CE-marked for human implantables, its performance meets national Chinese medical device standards YY 0504–2016 (Horizontal steam sterilizers) and supports internal validation protocols required by ISO/IEC 17025-accredited laboratories. Documentation includes factory calibration records for pressure and temperature sensors, and optional IQ/OQ support packages are available upon request.

Software & Data Management

The SYQ-DSX-280B features an embedded microcontroller-based control panel with LED display and tactile membrane buttons—designed for intuitive operation without external PC dependency. Cycle logs (start time, set temperature, duration, end status) are stored onboard for up to 100 cycles and can be manually reviewed or exported via RS-232 interface (optional cable and terminal software provided). Though not natively compliant with FDA 21 CFR Part 11, the system supports audit-trail-ready operation when paired with third-party data logging hardware and timestamped printouts—enabling traceability for QA/QC audits, internal SOP enforcement, and regulatory readiness in non-GxP or research-use-only contexts.

Applications

• Sterilization of reusable stainless-steel tools and glassware in teaching laboratories and biosafety level 1/2 facilities.
• Preparation of microbiological growth media and reagents requiring depyrogenation and microbial kill.
• Decontamination of contaminated waste prior to disposal in accordance with local biosafety regulations.
• Processing of textile dressings, surgical drapes, and absorbent pads in ambulatory clinics and veterinary practices.
• Validation support for method transfer studies involving steam-based sterilization parameters.

FAQ

What is the maximum recommended operating pressure and corresponding temperature?
The unit is rated for a maximum working pressure of 0.142 MPa (20.6 psi), corresponding to a saturation temperature of 126 °C at sea level.
Does the sterilizer include validation accessories such as biological indicators or thermocouple ports?
No—biological indicators, process challenge devices, and thermocouple feedthroughs are not included but are compatible with standard autoclave validation kits (e.g., Geobacillus stearothermophilus spore strips, Class 5 integrators).
Can liquid loads be sterilized without boil-over or container rupture?
Yes—when using the slow exhaust (liquid) cycle mode (if enabled via firmware update or external controller), pressure is released gradually to prevent sudden vapor expansion; users must ensure containers are loosely capped and filled ≤75% capacity.
Is third-party calibration and preventive maintenance supported?
Yes—certified service technicians provide annual calibration against NIST-traceable references and scheduled maintenance including gasket replacement, safety valve testing, and chamber integrity verification.
What electrical and environmental requirements must be met for safe installation?
A dedicated 220 V AC, 16 A circuit with grounded outlet is required; ambient temperature must remain between 5–40 °C, relative humidity <80% RH non-condensing, and installation surface must be level, vibration-free, and ventilated to dissipate residual heat.