Shanghai Shen YX280/15 Portable Steam Sterilizer

Overview

The Shanghai Shen YX280/15 Portable Steam Sterilizer is a compact, gravity-displacement autoclave engineered for reliable saturated steam sterilization in resource-constrained or space-limited laboratory environments. Operating on the principle of moist heat sterilization—where microbial inactivation is achieved through protein denaturation and nucleic acid hydrolysis under controlled saturated steam conditions—the unit delivers validated lethality (F₀ ≥ 12 min) at 121°C (0.1 MPa gauge) or 126°C (0.14 MPa gauge), conforming to core requirements of ISO 17665-1, EN 285, and USP . Its natural convection heating system eliminates reliance on mechanical fans or complex steam distribution manifolds, reducing maintenance points while ensuring consistent thermal penetration into porous loads and wrapped instruments. Designed as a benchtop-class device with a 15 L chamber volume, it serves routine sterilization needs for culture media, glassware, surgical tools, and non-critical labware in teaching labs, field clinics, veterinary practices, and QC/QA units where full-scale Class B autoclaves are impractical.

Key Features

• Full AISI 304 stainless steel construction—including chamber, lid, and support frame—for corrosion resistance, ease of cleaning, and long-term structural integrity under repeated thermal cycling.
• Radial self-expanding lid sealing mechanism with high-temperature silicone rubber gasket ensures uniform compression and leak-tight closure without excessive manual torque; gasket life exceeds 5,000 cycles under normal use.
• Dual-function analog pressure/temperature gauge provides real-time, synchronized readout of chamber pressure (0–0.25 MPa) and corresponding saturation temperature (0–140°C), enabling direct correlation per steam tables per ASME BPE-2021 Annex D.
• Integrated low-water cutoff sensor and dry-run protection circuit automatically de-energize heaters when water level falls below minimum operational threshold—preventing element damage and eliminating risk of uncontrolled thermal runaway.
• 90° rotary handle with ergonomic grip enables single-handed lid operation; vent valve allows controlled release of non-condensable air and condensate prior to sterilization phase, improving cycle reproducibility.
• Front-mounted drain cock facilitates complete removal of residual condensate post-cycle, minimizing mineral buildup and supporting GLP-compliant cleaning protocols.

Sample Compatibility & Compliance

The YX280/15 accommodates standard sterilization loads including Petri dishes, test tubes, pipette tips, cotton-plugged flasks, wrapped instrument sets (up to 28 × 21 cm footprint), and liquid media in borosilicate containers. It is not intended for porous load sterilization requiring vacuum-assisted air removal (e.g., wrapped textiles or lumened devices), nor for thermolabile materials. The device meets national safety standards GB 4793.1–2019 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and GB 8599–2008 (General Technical Requirements for Large Steam Sterilizers). While not certified to ISO 13485 or FDA 21 CFR Part 820 out-of-the-box, its design supports integration into GMP-aligned workflows when paired with external validation documentation (e.g., IQ/OQ/PQ executed per ASTM E2500-13 guidelines).

Software & Data Management

This model operates via electromechanical controls without embedded microprocessor logic or digital data logging. All operational parameters—including setpoint temperature, exposure duration, and pressure—are manually selected and monitored via analog dials and gauges. Cycle verification relies on external process indicators (Class 4–6 chemical integrators) and biological indicators (e.g., Bacillus stearothermophilus spore strips). For laboratories requiring audit-ready records, integration with standalone chart recorders or third-party data acquisition systems (e.g., compliant with FDA 21 CFR Part 11 via secure USB export) is feasible using optional analog output modules (not included). Routine maintenance logs, calibration records, and sterilization logs must be maintained manually per ISO 15189:2022 Clause 5.9.

Applications

• Routine sterilization of microbiological growth media (e.g., nutrient agar, LB broth) in academic teaching labs and startup biotech incubators.
• Decontamination of reusable glassware, metal instruments, and rubber stoppers in veterinary clinics and rural health centers lacking centralized sterilization infrastructure.
• Preparation of sterile saline solutions and diluents for environmental monitoring programs under ISO 14644-1 cleanroom sampling protocols.
• Validation support for small-batch production of non-sterile pharmaceutical intermediates where terminal moist heat treatment is specified in master manufacturing records.
• Field-deployable sterilization in mobile diagnostic units or disaster-response laboratories operating on generator-supplied 220 V / 50 Hz power.

FAQ

What is the maximum recommended load volume for optimal sterilization efficacy?
For consistent thermal penetration and steam saturation, the chamber should not exceed 70% volumetric fill—i.e., ≤10.5 L of porous or wrapped items, or ≤12 L of liquids (accounting for expansion headspace).
Can this unit be used for sterilizing liquids in sealed bottles?
Yes—provided bottles are loosely capped or vented during heating, then sealed post-sterilization; over-pressurization risks due to liquid expansion must be mitigated via proper container selection (e.g., borosilicate glass with >1.5× pressure rating).
Does the YX280/15 include a built-in timer or automatic cycle termination?
No—it features manual start/stop control only; users must monitor elapsed time externally using calibrated stopwatches or integrated lab timers.
Is third-party validation support available from Shanghai Shen?
Shanghai Shen provides technical specifications and dimensional drawings for IQ/OQ protocol development but does not supply certified validation services; qualified local service providers are recommended for PQ execution.
What maintenance intervals are advised for sustained performance?
Daily: Drain condensate, inspect gasket for cracks or deformation. Quarterly: Calibrate pressure gauge against NIST-traceable reference standard; verify safety valve lift pressure at 0.16 MPa ±0.01 MPa.