EO Sterilizer Equipment

Excellent Penetration: EO gas effectively penetrates complex medical device lumens, packaging materials, and the interior of the product, achieving complete sterilization.

Low-Temperature Processing: Typical operating temperatures range from 30°C to 60°C, making it ideal for heat-sensitive materials (such as plastics, resins, and electronic components).

High Material Compatibility: Safe for most metals and plastics, without causing corrosion or degradation.

High Sterility Assurance Level (SAL): Easily achieves a sterility assurance level of 10⁻⁶, the highest standard in the medical device industry.

Validatable Process: All parameters of the entire sterilization process are monitored, recorded, and traceable, fully complying with stringent global regulations such as FDA 21 CFR Part 11 and ISO 11135.

Automation and Safety: Fully automated operation with multiple built-in interlocks and safety protocols significantly reduces the risk of personnel exposure to EO.

Application Areas

The core application areas of ethylene oxide sterilization equipment are highly concentrated in high-value products that are sensitive to temperature and humidity. Its most important and traditional application is to provide terminal sterilization solutions for the medical device industry. It is widely used in various products such as disposable syringes, catheters, heart valves, surgical sutures, dialyzers, etc.; at the same time, it is also an indispensable sterilization method for pharmaceutical packaging materials (such as plastic medicine bottles and rubber stoppers), and extends to laboratory consumables (such as culture dishes and pipette tips) and some special consumer products that require low-temperature sterilization (such as food packaging and cosmetics production equipment).

A complete EO sterilization system typically includes the following:

• Sterilization Chamber: A high-pressure, airtight stainless steel chamber that holds the product to be sterilized.
• Vacuum System: Extracts air before sterilization and removes EO gas after sterilization.
• Heating & Humidification System: Precisely controls the temperature and humidity within the chamber to meet process requirements.
• EO Gas Source: Consists of an EO gas cylinder, an electrically heated vaporizer, and a precision injection device to ensure accurate and safe injection of EO gas.
• Purge & Aeration System: Provides multiple flushes with nitrogen or filtered air to safely remove EO gas.
• Advanced Control System: An automated control system based on a PLC and HMI (human-machine interface) that can store, run, and monitor a variety of sterilization procedures, record all critical parameters (temperature, pressure, humidity, time, and gas concentration) in real time, and generate complete, regulatory-compliant sterilization reports.
• Safety System: includes leak detection, pressure safety valve, high temperature limiter, emergency exhaust and spray system to ensure the safety of operators and the environment.

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FAQ

Is EO gas toxic? How is safety ensured?
Yes, ethylene oxide is a toxic, flammable, and carcinogenic gas. Therefore, EO Sterilizer Equipment is designed with multiple safety measures:

• Highly airtight chambers and negative pressure operation prevent gas leaks.
• Built-in leak detection and alarm systems.
• Emergency exhaust and spray systems.
• Multiple interlocked access doors prevent opening before the cycle is complete.
• Operators must be professionally trained and equipped with personal protective equipment (PPE).

How is EO residue removed from EO sterilizer equipment after sterilization?

EO residue is primarily removed through a process called "aeration." After sterilization, products must be left in a controlled, ventilated environment for a sufficient period of time (from a few hours to several days) to allow residual EO gas to naturally evaporate and dissipate until its concentration falls below the strict limits set by standards such as ISO 10993-7, ensuring safety for patients and users.

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