A Food Grade ETO Sterilizer refers to an Ethylene Oxide sterilization system designed specifically for use in the food industry. ETO sterilization uses ethylene oxide gas—a colorless, odorless, and highly effective antimicrobial agent—to eliminate bacteria, viruses, fungi, and spores from heat- or moisture-sensitive materials. “Food grade” indicates that the equipment is constructed from materials compliant with food safety standards, such as 304 or 316L stainless steel, ensuring no contamination risks for edible products. These sterilizers are commonly used for spices, herbs, dried fruits, seasonings, gums, starches, nutmeats, and food packaging, extending shelf life while preserving quality without damaging delicate items.
Unlike steam or heat-based methods, ETO operates at low temperatures (typically 30–60°C) and low humidity, making it ideal for porous or moisture-sensitive food items that can’t withstand traditional autoclaving.
ETO Sterilizer Video
How Does ETO Sterilization Work?
The process typically involves three main stages in a sealed chamber:
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Pre-conditioning: Items are humidified and heated to optimize gas penetration.
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Sterilization: ETO gas (at 400–1000 mg/L concentration) is introduced under controlled vacuum/pressure, killing microbes in 1–6 hours.
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Aeration: Residual gas is removed via purging and heating to ensure safety, as ETO is toxic and flammable if not fully dissipated.
The entire cycle can take 4–12 hours, depending on load size and item complexity. Sterility can last 6 months to 5 years if items are properly packaged and stored in low-humidity environments.
Applications in the Food Industry
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Spices and Herbs: Sterilizes black pepper, oregano, cinnamon, parsley, and allspice to reduce natural contamination.
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Dried Foods: Treats fruits, seasonings, and maize starch products.
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Ingredients and Additives: Processes gums, nutmeats, and other shelf-stable components for safety and extended shelf life.
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Packaging: Ensures sterile barriers for food contact materials.
Salient Features of Ethylene Oxide Sterilizer
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Machine is suitable to Sterilize Surgical Medical Device products like I.V. Sets, Disposable Syringes, Disposable Surgical Set, catheter, Urine Bag etc.
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ETO Sterilization reduce microbiological load and increase life span of material.
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Modular construction of chamber.
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Model is available from 0.5 Cubic Meters to 40 Cubic Metres.
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Easy to operate.
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Fully automatic operation based on PLC control.
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Semi Automatic (Pneumatically Operated Ball Valve) Control.
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Contact parts are SS 304 / 316.
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Process time about 8 hours.
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IQ/OQ/DQ documentation can be offered on demand. (OPTIONAL).
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It is useful for prevention of micro biological contamination useful for treatment of spices, dried nuts, Foods Packed cereals etc.
Process Operation of ETO Sterilizer
Ethylene Oxide Sterilization (Sterilisation) offers various distinct advantages over the conventional steam sterilizers (sterilisers), being a DRY & COLD (operates at 50ºC ) process proves very useful in sterilization of expensive items, also it has got a unique penetration ability, so it is very useful in sterilization (Sterilisation) of expensive and delicate items such as Cardiac catheters, Stents, IOL’s Tubings, various types of scopes, sharp surgical instruments etc., its unique mode of action, also enhances the life of several surgical accessories & disposables items thus making them perfectly reusable.
Types of EO Gas Sterilizers
We are one of the leading EO Gas Sterilizer manufacturer in India. We manufacture below two types of ETO sterilizers:
Semi Automatic Operation Mode EO Sterilizer: In this type of control mode there are analog type buttons onto control panel of the machine through which machine operation procedure will be done.
Fully Automatic Operation Mode EO Sterilizer: This is PLC HMI based fully automatic control mode equipment in which there is HMI mounted onto control panel of the machine through which operation procedure done.
Technical Specification of Eto Sterilizer
| Model | AETOS – 2.6 | AETOS – 4.5 | AETOS – 8 |
| Working Capacity in Cu. Ft. | 2.6 | 4.5 | 8 |
| Working Volume | 70 Liters | 125 Liters | 200 Liters |
| Chamber Size | 12” (W) x 12” (H) x 32”
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12” (W) x 12” (H) x 54” (D) OR
15” (W) x 15” (H) x 36” (D) |
20” (W) x 18” (H) x 38” (D) OR 16” (W) x 16” (H) x 54” (D) |
| Sterilant Gas | 40 grams cartridge | 100 grams cartridge | 170 grams cartridge |
| Sterilization Cycle | Warm & Cold Cycles are possible. | Warm & Cold Cycles are possible. | Warm & Cold Cycles are possible. |
| Aeration | In-built aeration facility provided. | In-built aeration facility provided. | In-built aeration facility provided. |
| Utility | Compressed Air (100 psig) | Compressed Air (100 psig) | Compressed Air (100 psig) |
| Power Supply | 1 K.W. | 2 K.W. | 2.5 K.W. |
| Power Voltage | 220 volts, Single Phase, 50 Hertz | 220 volts, Single Phase, 50 Hertz | 220 volts, Single Phase, 50 Hertz |
* Power voltage can be adjusted as per customer’s domestic power voltage requirements.
* Rights of technical improvements & modification reserved.
* Illustrations & dimensions are shown for information purpose only.
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