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Large-Capacity EO Sterilisers
A Large-Capacity EO Sterilisers is a specialized device designed specifically to meet large-scale, high-load sterilization needs. A significant difference from conventional sterilizers is its larger sterilization chamber volume, enabling it to process large quantities of sterilized items at once. For example, some large medical product manufacturers use sterilizers with chamber capacities of hundreds or even thousands of liters, capable of simultaneously accommodating entire boxes of disposable medical devices and large surgical instrument sets.
Features
Who uses Large-Capacity EO Sterilisers?
Medical Industry: Both large general hospitals and medical device manufacturers rely extensively on EtO sterilizers. Hospitals sterilize large quantities of surgical instruments and disposable medical consumables (such as syringes, infusion sets, and catheters) to ensure a sterile environment during medical procedures and prevent cross-infection. Medical device manufacturers utilize large-capacity sterilizers to sterilize a wide range of implantable medical devices (such as pacemakers and artificial joints) and complex endoscopic instruments during production, meeting the market's enormous demand for sterile medical devices.
Pharmaceutical Industry: During the pharmaceutical production process, pharmaceutical companies require EtO sterilization to ensure microbiological compliance for everything from drug packaging materials (such as plastic bottles, bottle caps, and aluminum foil seals) to heat-sensitive raw materials. Biologics and vaccines, in particular, require extremely strict sterility requirements for both the production environment and the raw materials. The low-temperature sterilization properties of ethylene oxide precisely meet these requirements, ensuring the quality and safety of drugs throughout their shelf life. Research Institutions: Various laboratory instruments, biological sample containers, and cell culture consumables used in research laboratories require rigorous sterilization to prevent microbial contamination from interfering with experimental results. Large-capacity EtO sterilizers can process large quantities of laboratory supplies at once, improving research efficiency and meeting the ongoing need for a sterile environment.
Working Principle of Ethylene Oxide (EtO)
Sterilization Principle: Ethylene oxide is a highly reactive cyclic ether compound. Its sterilizing effect is primarily based on alkylation reactions with key groups on microbial proteins and nucleic acids, such as carboxyl (-COOH), amino (-NH₂), and hydroxyl (-OH). This chemical reaction disrupts the molecular structure of microorganisms, disrupting their normal metabolism and physiological functions, ultimately leading to their death and achieving the desired sterilization effect. Ethylene oxide can inactivate common bacteria and fungi, as well as difficult-to-kill bacterial spores and even viruses.
Sterilization Process: The sterilization process typically consists of multiple stages. First, a pretreatment stage: A vacuum system is used to extract air from the sterilization chamber to create a negative pressure environment. This step effectively reduces the oxygen content in the sterilization chamber, prevents the ethylene oxide from exploding at high temperatures, and facilitates the subsequent uniform distribution of the ethylene oxide. Subsequently, an appropriate amount of ethylene oxide is injected into the sterilization chamber, and the temperature and humidity are adjusted to the appropriate range. The optimal sterilization temperature, humidity, and ethylene oxide concentration vary depending on the item being sterilized. Typically, the temperature is controlled between 25°C and 65°C, the humidity is maintained between 40% and 80%, and the gas concentration varies from several hundred to several thousand mg/L, depending on the specific situation. During the sterilization exposure phase, these parameters must remain stable for a specific period of time to ensure sufficient contact and reaction between ethylene oxide and microorganisms. Finally, during the post-processing phase, a vacuum system is used to extract any residual ethylene oxide gas. Through the desorption process, residual ethylene oxide on the surface of the product and inside the packaging is further reduced to safe standards.
Related equipment
Why Choose Riches EtO Sterilizers?
Excellent Large-Capacity Design: Riches' large-capacity EtO sterilizers boast industry-leading chamber volumes and can be customized to meet customer needs for large-scale production or centralized sterilization. Their rational internal design ensures uniform distribution of ethylene oxide gas even with large loads, ensuring that every sterilized item receives a thorough and consistent sterilization treatment, avoiding sterilization blind spots caused by excessive loading.
Precise Parameter Control: Equipped with an advanced intelligent control system, the system precisely controls key parameters such as temperature, humidity, gas concentration, and time during the sterilization process. The system includes multiple preset programs to accommodate various medical devices and pharmaceutical packaging materials, while also allowing users to customize parameters to meet specific needs. Furthermore, high-precision sensors monitor parameter changes in real time. If deviations occur, the system automatically adjusts to ensure optimal sterilization throughout the entire process, effectively enhancing the reliability and stability of sterilization results.
Strict Safety Assurance: Recognizing the hazards of ethylene oxide, Riches has incorporated multiple safety measures into its product design. The equipment features a fully sealed structure and advanced leak detection technology, enabling real-time monitoring of the chamber's sealing status. If a gas leak is detected, emergency procedures are immediately initiated, including automatic valve closure and ventilation system activation, ensuring maximum safety for both operators and the surrounding environment. Furthermore, the sterilizer is equipped with comprehensive over-temperature and over-pressure protection devices, as well as an emergency stop button, ensuring rapid shutdown in the event of an emergency, preventing accidents.
Efficient Residual Gas Treatment: Riches EtO sterilizers offer significant advantages in degassing and exhaust gas treatment. Innovative degassing technology significantly shortens degassing time and effectively reduces residual ethylene oxide, ensuring that products meet safety standards in the shortest possible time. Advanced exhaust treatment systems, such as catalytic oxidation and adsorption purification equipment, convert ethylene oxide in the exhaust gas into harmless substances before discharge, strictly complying with environmental regulations and reducing environmental pollution.
Excellent After-Sales Service: Riches not only provides high-quality products but also offers comprehensive and attentive after-sales service. Our professional after-sales team is on call at all times, providing customers with one-stop services including equipment installation and commissioning, operator training, regular maintenance, and troubleshooting. Through our remote monitoring system, we provide real-time insights into equipment operating conditions, provide early warnings of potential failures, and provide timely solutions to minimize equipment downtime and ensure smooth production operations.
Large-Capacity EO Sterilisers Environment
Fully validated for ethylene oxide (EtO)
Flexible sterilization cycles
Robust certifications
Comprehensive EtO sterilization solutions, from partial to full cycles
Compliant with regulatory requirements.
Residue detection.
FAQ
What is EtO and why is it used for sterilization?
Ethylene Oxide (EtO) is a sterilizing gas used for medical devices and supplies that are sensitive to heat or moisture and cannot be sterilized by high-temperature steam or other methods. It can penetrate packaging and complex materials without damaging them, enabling effective sterilization of items such as surgical kits, blood bags, syringes, ventilators, and other medical devices.
Can the EtO sterilization cabinet be customized to fit our facility layout and capacity requirements?
Yes. We offer full customization based on your space constraints, workflow, and production volume. Chamber size, loading configuration, cycle parameters, and emission-control systems can all be tailored to match your sterilization capacity needs. Our engineering team also provides on-site evaluation to ensure optimal integration with your existing medical production line or hospital sterilization workflow.
Do you customize sterilization cycles for different medical materials or product types?
Absolutely. Different materials-such as PVC, PE, PP, rubber, silicone, and anesthesia circuits-require specific temperature, humidity, and gas-exposure settings. We customize cycle parameters including preconditioning, EtO injection level, aeration duration, and monitoring protocols to ensure full compatibility and meet ISO 11135 requirements for your disposable medical devices.
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