Zealway EC14 Benchtop Pulsed Vacuum Sterilizer

Overview

The Zealway EC14 Benchtop Pulsed Vacuum Sterilizer is a Class B small-footprint steam sterilization system engineered for laboratories, clinical research units, and quality control facilities requiring validated, reproducible terminal sterilization of heat-stable and porous loads. It operates on the fundamental principle of saturated steam under controlled pressure and vacuum conditions—leveraging pulsed pre-vacuum cycles to remove air from load cavities, ensuring complete steam penetration into wrapped instruments, lumened devices, and absorbent materials. Unlike gravity-displacement sterilizers, the EC14 achieves uniform thermal lethality across heterogeneous loads by eliminating cold spots through repeated vacuum-steam pulses. Its chamber design conforms to EN 13060:2014 requirements for Class B sterilizers, verified via Process Challenge Device (PCD) testing and validated vacuum integrity (leak rate ≤ 0.13 kPa/min). The integrated electric steam generator enables rapid heating to operational temperatures (115–135 °C), while the stainless-steel SUS304 chamber—certified to withstand 0.75 MPa hydrostatic test pressure—ensures long-term structural reliability under cyclic thermal and mechanical stress.

Key Features

• Microprocessor-controlled pulsed vacuum system with adjustable pulse count (1–5 cycles) and final vacuum level ≤ −92 kPa for optimal air removal
• Class B-compliant sterilization cycle architecture: pre-vacuum → steam conditioning → sterilization → exhaust → vacuum drying
• Intelligent adaptive drying algorithm that dynamically calculates required drying time based on load mass and moisture content—no manual timing input needed
• Dual-pressure monitoring: analog Bourdon-tube gauge (−0.1 to 0.5 MPa range) plus digital pressure sensor with real-time display on LCD interface
• Triple-layer safety interlock: mechanical door lock, pressure-temperature interlock, and vacuum seal verification prior to cycle initiation
• Redundant water-level protection: capacitive water-level sensor + dry-run thermal cutoff to prevent heater damage during low-water conditions
• Overpressure mitigation via certified safety valve (set at 0.25 MPa) and independent electronic overpressure shutdown circuit
• 60-cycle non-volatile memory with USB export capability for GLP/GMP-compliant record retention and audit trail generation
• Integrated 0.2 µm hydrophobic air filter for sterile air reintroduction during drying phase—prevents microbial ingress while maintaining ISO 5 cleanroom-compatible exhaust
• Vacuum-assisted door sealing mechanism ensures consistent gasket compression and leak-tight closure; automatic door release after pressure and temperature return to ambient thresholds

Sample Compatibility & Compliance

The EC14 accommodates a broad spectrum of sterilizable items including wrapped surgical instrument sets, textile packs, glassware, rubber tubing, and fluid-filled containers (with appropriate liquid-cycle programming). Its 14 L chamber (246 mm diameter × 397 mm depth) supports standard DIN 58953-compliant trays and perforated sterilization baskets. All cycles comply with ISO 17665-1 for moist heat sterilization validation, and routine performance verification includes BD (Bowie-Dick) testing per EN 285 Annex C and vacuum leakage assessment per EN 13060 Clause 6.4. The unit meets Chinese national standard GB 8599–2008 and carries CE marking for conformity with the Medical Device Regulation (MDR 2017/745) essential requirements. Optional thermal printer integration supports 21 CFR Part 11–compliant F₀ traceability and temperature/time profile archiving.

Software & Data Management

The EC14 features an embedded 4.3-inch TFT LCD interface with graphical workflow visualization, displaying real-time temperature, pressure, phase status, and cumulative F₀ value. Cycle parameters—including hold time, temperature setpoint, pulse count, and drying duration—are programmable and stored in EEPROM with power-fail resilience. User access is governed by three-tier permission levels (Operator / Administrator / Engineer), enforcing role-based parameter modification rights and preventing unauthorized deviation from validated protocols. USB 2.0 port enables secure export of cycle logs, error history, and calibration records in CSV format. Data files include timestamp, operator ID, cycle name, start/stop times, peak temperature/pressure, and pass/fail status against preset acceptance criteria—facilitating internal audits and regulatory submissions (e.g., FDA inspection readiness).

Applications

• Routine sterilization of reusable surgical instruments in university core facilities and contract research organizations (CROs)
• Preparation of sterile media components and glassware in microbiology and cell culture laboratories
• Terminal sterilization of packaging components and device housings in medical device R&D settings
• Validation support for ISO 13485 quality management systems through documented cycle repeatability and PCD challenge data
• BD testing and vacuum integrity verification in hospital central sterile supply departments (CSSD)
• Compliance-driven sterilization workflows requiring F₀-based lethality quantification per USP and EU Pharmacopoeia 5.1.1

FAQ

What sterilization standards does the EC14 meet?
The EC14 complies with EN 13060:2014 Class B requirements, GB 8599–2008, and ISO 17665-1. It passes PCD challenge tests and BD tests per EN 285 Annex C.
Can the EC14 sterilize liquids?
Yes—predefined liquid-cycle programs incorporate slow exhaust and extended drying phases to prevent boil-over and ensure container integrity.
Is F₀ calculation available during the cycle?
Yes—the control system computes and displays real-time F₀ values using thermocouple-measured chamber temperature and the reference temperature of 121.1 °C.
How is data integrity ensured for regulatory audits?
All cycle data are stored in non-volatile memory with timestamping and user authentication; USB export supports CSV-based archival compatible with LIMS and 21 CFR Part 11 audit trail requirements.
What maintenance is required for the vacuum pump?
The imported oil-free diaphragm vacuum pump requires only periodic filter replacement (every 6 months under normal use) and no lubrication or oil changes.