Desktop Fast Steam Sterilizer TM-XD35D

Overview

The Jihepu TM-XD35D is a benchtop, fully automated steam sterilizer engineered for precision, repeatability, and regulatory compliance in laboratory, clinical, and pharmaceutical environments. It operates on the validated principle of saturated steam under pressure—leveraging the well-established microbiocidal efficacy of moist heat at temperatures up to 134 °C and pressures up to 0.22 MPa. This device conforms to core sterilization physics defined in 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 process consistency required under GLP and GMP frameworks. Its compact 35 L chamber (Ø300 × 500 mm) enables rapid cycle times—typically 4–6 minutes for flash sterilization at 134 °C—making it suitable for high-turnover applications such as dental instrument reprocessing, ophthalmic tool sterilization, and small-batch media preparation.

Key Features

• Fully microprocessor-controlled operation with real-time LED display of temperature, pressure, elapsed time, and phase status (heating, sterilizing, exhaust, drying)
• Automated water injection system: 1.2 L distilled water reservoir supports 4–5 consecutive cycles without manual refilling
• Integrated steam recirculation design eliminates external steam venting—maintaining ambient lab humidity and reducing condensate management burden
• Dual-stage safety architecture: mechanical pressure relief valve (set point: 0.24 MPa) + redundant electronic thermal cutoffs (138 °C chamber sensor; 150 °C heating element overheat protection)
• Automatic cold-air purge mechanism ensures complete air removal prior to pressurization—critical for achieving uniform steam penetration and eliminating cold spots
• Stainless steel chamber constructed from medical-grade SUS304 stainless steel with ≥2.5 mm wall thickness, passivated and electropolished for corrosion resistance and cleanability
• Thermal uniformity ≤ ±1 °C across the entire load zone, verified per ISO 17665 Annex C protocols
• Dedicated drying cycle with controlled vacuum-assisted moisture extraction—essential for maintaining sterility integrity of wrapped instruments and porous loads
• Ergonomic insulated door with thermal shielding to prevent operator contact burns during operation and cooldown

Sample Compatibility & Compliance

The TM-XD35D is validated for sterilizing heat- and moisture-stable materials including surgical and dental instruments, ophthalmic tools, glassware, textile dressings, culture media (liquid and agar-based), and pharmaceutical preparations packaged in permeable wraps or rigid containers. It meets fundamental performance criteria outlined in ASTM F1055 (Standard Specification for Steam Sterilizers), EN 285 (Large steam sterilizers), and supports documentation requirements aligned with FDA 21 CFR Part 11 when integrated with compliant data logging systems. While not certified to EN 13060 (Small steam sterilizers) out-of-the-box, its operational parameters—including temperature accuracy, pressure stability, and cycle reproducibility—are consistent with Class B small sterilizer performance thresholds. All safety interlocks comply with IEC 61010-1 for laboratory electrical equipment.

Software & Data Management

The built-in control system records critical cycle parameters—including start time, setpoint temperature, actual chamber temperature profile, pressure curve, dwell duration, and end-of-cycle status—in non-volatile memory. Cycle logs are retained for ≥100 runs and can be exported via RS232 interface for archival or audit purposes. Optional USB data logger modules enable timestamped CSV export compatible with LIMS integration. The firmware supports user-defined program storage (up to 10 customizable cycles), password-protected parameter modification, and audit-trail-capable event logging—including door open/close events, alarm triggers, and manual overrides—facilitating compliance with GLP, GMP, and ISO 13485 quality system requirements.

Applications

• Routine sterilization of reusable surgical, dental, and ophthalmic instruments in outpatient clinics and university teaching labs
• Preparation and sterilization of microbiological growth media, buffers, and reagent solutions in research and QC laboratories
• Decontamination of contaminated glassware, stainless steel trays, and autoclavable polymer components
• Terminal sterilization of pre-packaged gauze, drapes, and other woven/non-woven medical textiles
• Validation support for sterilization process development—particularly for establishing D-value and F₀ calculations under controlled load configurations
• Emergency flash sterilization of unwrapped instruments where immediate reuse is required (per AAMI ST79 guidelines)

FAQ

What is the maximum recommended load volume for optimal sterilization efficacy?
For consistent thermal penetration and cycle reproducibility, the recommended maximum load is 70% of chamber volume (≤24.5 L), with adequate spacing between items to ensure unobstructed steam flow.

Does the unit meet international standards for traceable sterilization records?
Yes—the internal log retains full cycle metadata with timestamps; optional USB export enables long-term archiving and electronic signature compatibility per 21 CFR Part 11 when used with validated software.

Can the TM-XD35D sterilize liquids in sealed containers?
No. This model is designed for porous and solid loads only. Liquid sterilization requires specialized gravity-displacement or vacuum-pulse cycles with slow-cool functionality not supported by this benchtop configuration.

Is distilled water mandatory for operation?
Yes. Use of distilled or deionized water is required to prevent scale buildup in the heating element and water reservoir, ensuring long-term reliability and adherence to maintenance intervals specified in the technical manual.

What maintenance intervals are recommended for regulatory compliance?
Daily: chamber wipe-down and door gasket inspection; Weekly: drain line flush and water reservoir cleaning; Annually: calibration verification of temperature and pressure sensors by an accredited service provider.