IRM NE75 Vertical High-Pressure Steam Sterilizer
| Brand | IRM |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | NE75 |
| Instrument Type | Vertical |
| Max Temperature | 141 °C |
| Max Pressure | 0.3 MPa |
| Chamber Dimensions | Ø400 × 538 mm |
| External Dimensions | 630 × 680 × 900 mm |
| Chamber Volume | 75 L |
Overview
The IRM NE75 Vertical High-Pressure Steam Sterilizer is an engineered solution for reliable, repeatable, and compliant moist-heat sterilization in research laboratories, clinical diagnostics facilities, pharmaceutical QC labs, and academic institutions. Operating on the fundamental principle of saturated steam under controlled pressure—per ASTM F1952 and ISO 17665-1—the NE75 achieves microbial inactivation through thermal denaturation of proteins and nucleic acids at temperatures up to 141 °C and pressures up to 0.3 MPa (≈3 bar gauge). Its vertical configuration optimizes floor space while maintaining full compliance with national and international safety and performance standards for Class B sterilizers (EN 13060:2022). Designed for routine sterilization of reusable glassware, stainless-steel instruments, culture media, liquid reagents, and biohazardous waste, the NE75 integrates thermodynamic precision with mechanical robustness and operational transparency.
Key Features
- High-fidelity iSmart microprocessor control system with ±0.1 °C temperature resolution and real-time PID regulation across all phases (pre-vacuum, sterilization, exhaust, cooling)
- iSpeed rapid-cooling module enabling chamber lid opening in approximately 6 minutes post-cycle—reducing turnaround time by ~40% versus conventional gravity-displacement units
- 7-inch full-color capacitive touchscreen interface with intuitive workflow navigation, multilevel password protection (administrator/operator/user), and one-touch factory reset
- Eight preprogrammed sterilization modes: culture medium, solid instruments, liquids, waste,保温 (hold), dissolution, preheating, and sterilization + hold—each fully configurable for time, temperature, and pressure ramp profiles
- Triple-stage exhaust logic: full exhaust, pulsed exhaust, and no-exhaust options—enabling precise control over depressurization rate to prevent boil-over in sensitive liquid loads
- Fail-safe dual-locking mechanism with lid-position sensing, interlocked door switch, and independent overtemperature/overpressure cutouts—certified per GB 8599-2017 and aligned with ASME BPVC Section VIII requirements
- SUS304 stainless-steel chamber (Ø400 × 538 mm) with titanium-alloy heating elements (3.2 kW) and high-performance silicone gasketing for long-term sealing integrity and corrosion resistance
Sample Compatibility & Compliance
The NE75 accommodates standard laboratory loads including autoclavable glassware (e.g., Erlenmeyer flasks, Petri dishes), metal surgical tools, pipette tips, agar-based growth media (up to 5 L per cycle), and regulated biological waste containers. It supports validated load configurations per ISO 11140-1 (biological indicator testing) and meets key regulatory expectations for GLP/GMP environments—including automated event logging, cycle traceability, and hardware-level fault diagnostics. All safety-critical subsystems—including water level sensors, pressure transducers, temperature probes (PT100), SSR relays, and CPU watchdog timers—are redundantly monitored. The unit complies with electromagnetic compatibility (EMC) per IEC 61326-1 and electrical safety per IEC 61010-1. Optional accessories—such as calibrated temperature sensors (for load monitoring), pressure data loggers, and thermal printers—enable 21 CFR Part 11–compliant audit trails when integrated with validated software protocols.
Software & Data Management
The embedded iSmart controller records timestamped cycle metadata—including chamber temperature, jacket pressure, elapsed time, phase transitions, and fault codes—to internal non-volatile memory (≥10,000 cycles). Data export is supported via USB port (CSV format) for offline analysis or LIMS integration. Optional thermal printers provide hard-copy output of sterilization certificates showing start/end times, peak temperature/pressure, and operator ID. When paired with IRM’s optional validation-grade data logger (sold separately), the system supports IQ/OQ documentation packages aligned with ISO 13485 and EU Annex 1 requirements. All firmware updates are delivered via secure USB media with version-controlled checksum verification—no cloud connectivity or remote access is implemented, preserving network isolation in regulated settings.
Applications
- Routine sterilization of microbiological media (e.g., LB broth, nutrient agar) without caramelization or pH drift
- Decontamination of sharps, forceps, scalpels, and reusable labware in biosafety level 2 (BSL-2) containment labs
- Pre-sterilization conditioning of bioreactor vessels and fermentation components
- Terminal sterilization of aqueous buffers, saline solutions, and chromatography mobile phases
- Validation support for sterilization process development per ISO 11134 and PDA Technical Report No. 1
- Teaching laboratories requiring reproducible, hands-on exposure to steam sterilization kinetics and F0 calculation principles
FAQ
What is the maximum allowable working pressure and corresponding saturation temperature?
The NE75 is rated for a maximum operating pressure of 0.3 MPa (gauge), corresponding to a saturated steam temperature of 141 °C per IAPWS-IF97 steam tables.
Does the unit support vacuum-assisted air removal for porous load sterilization?
No—the NE75 employs gravity displacement steam penetration and is classified as a Class N sterilizer per EN 13060; it is not equipped with a vacuum pump or pre-vacuum cycle.
Can the cooling phase be programmed independently of exhaust mode?
Yes—exhaust mode (full/pulsed/none) and post-sterilization cooling setpoint (40–141 °C) are configured separately within each program, allowing fine-tuned control over condensation and thermal stress management.
Is the chamber volume verified per ISO 17665 Annex C?
Chamber volume (75 L nominal) is determined by geometric measurement (Ø400 × 538 mm) and conforms to EN 13060 definition of “chamber capacity”; volumetric calibration for F0 validation requires user-performed thermocouple mapping per ISO 11140-4.
What maintenance intervals are recommended for optimal performance?
Daily: visual inspection of gasket integrity and drain line clearance. Monthly: verification of water level sensor response and pressure relief valve operation. Annually: full calibration of temperature and pressure sensors by an IRM-certified technician using NIST-traceable standards.
