Shanghai Boxun BXM-30R Vertical Steam Sterilizer

Overview

The Shanghai Boxun BXM-30R is a vertically oriented, microprocessor-controlled steam sterilizer engineered for reliable thermal decontamination of laboratory instruments, glassware, culture media, and non-porous medical devices. It operates on the principle of saturated steam under pressure—leveraging the well-established relationship between temperature, pressure, and microbial lethality defined in international sterilization standards. At its rated operating condition of 126 °C and 0.142 MPa, the unit achieves a minimum F₀ value sufficient for routine sterilization cycles compliant with ISO 17665-1 and Chinese pharmaceutical standard YY1007–2018. The chamber’s 29 L capacity supports batch processing of standard autoclave-compatible loads, including up to two 1-L Erlenmeyer flasks or four 500-mL media bottles per cycle. Its compact footprint (395 × 395 × 780 mm) makes it suitable for benchtop integration in QC labs, teaching laboratories, and small-scale bioprocessing facilities where space efficiency and regulatory traceability are prioritized.

Key Features

• Stainless steel 304 construction throughout critical components—including chamber, outer jacket, and removable basket—ensuring long-term resistance to acidic, alkaline, and saline corrosion encountered during repeated sterilization cycles.
• Intelligent microcomputer control system with digital PID temperature regulation, enabling precise setpoint maintenance within ±1 °C across the full operating range (105–126 °C).
• Self-sealing silicone gasket design with automatic cold-air purge function prior to pressurization, minimizing air entrapment and ensuring uniform steam penetration.
• Dual safety architecture: mechanical overpressure relief valve (set at 0.165 MPa design limit) coupled with electronic overtemperature cutoff and dry-run protection to prevent heater damage during low-water conditions.
• Acoustic end-of-cycle alert with visual status indicators for sterilization phase, exhaust, and cooling stages—facilitating unattended operation while maintaining operator awareness.
• Calibration-ready interface supporting periodic verification of temperature and pressure sensors per GLP requirements; pressure gauge certified to Class 2.5 accuracy per JJG 52–2013.

Sample Compatibility & Compliance

The BXM-30R accommodates standard laboratory load configurations, including wrapped surgical instruments, unwrapped metal tools, liquid media in heat-stable containers (e.g., borosilicate glass or PP), and porous textile packs—provided load density and packaging permit adequate steam circulation. It is not intended for sterilizing oils, powders, or heat-labile polymers. All operational parameters align with YY1007–2018 “Vertical Steam Sterilizers for Medical Devices”, which specifies performance criteria for chamber temperature uniformity, leak rate, and biological indicator log-reduction validation. While not pre-certified to ISO 13485 or FDA 21 CFR Part 820, the device supports user-defined validation protocols required under GMP environments when paired with external thermocouple mapping and spore challenge testing.

Software & Data Management

This model features embedded firmware without external PC connectivity or data logging capability. Cycle parameters—including set temperature, duration, and start time—are retained in non-volatile memory for up to 100 consecutive runs. For regulated environments requiring audit trails, users may integrate optional third-party USB data loggers compatible with RS232 output (available via accessory port). All displayed values—temperature, pressure, and elapsed time—are updated in real time with 1-second resolution. Firmware revision level and factory calibration date are accessible via service menu for quality documentation purposes.

Applications

• Routine sterilization of microbiological culture media (e.g., nutrient agar, LB broth) in academic and industrial R&D labs.
• Decontamination of reusable stainless-steel forceps, scalpels, and pipette tips in clinical diagnostics settings.
• Preparation of sterile water and buffer solutions for HPLC, ICP-MS, and cell culture workflows.
• Validation support for process development in small-volume pharmaceutical manufacturing units subject to local NMPA oversight.
• Teaching applications in undergraduate biomedical engineering and microbiology curricula, emphasizing thermal death kinetics and sterilization cycle design principles.

FAQ

What is the maximum allowable load volume for optimal steam penetration?
For liquids, fill containers to no more than 75% capacity and place upright with loosened caps; total liquid volume per cycle should not exceed 18 L to avoid boil-over and ensure uniform heating.
Does the BXM-30R support gravity displacement or pre-vacuum cycles?
It utilizes gravity displacement only—cold air is expelled automatically during initial steam injection, but no vacuum pump or pulsing function is included.
Is third-party calibration support available?
Yes—certified metrology laboratories can perform on-site verification of temperature sensors (IEC 60751 Pt100) and pressure transducers against national standards; calibration certificates are issued per ISO/IEC 17025.
Can the unit be used for sterilizing animal tissue or biohazard waste?
No—this model lacks a dedicated waste cycle with extended hold times and is not validated for Category B infectious waste per WHO guidelines; dedicated waste autoclaves with integrated shredding or effluent treatment are required.
What maintenance intervals are recommended?
Daily: chamber wipe-down and gasket inspection; monthly: drain line flush and safety valve functional test; annually: full sensor recalibration and door seal integrity assessment per YY1007–2018 Annex D.