ETO air cleaner
Ethylene oxide (EtO) is a harmful gas that is widely used for sterilizing medical products. During storage, it can continue to be released for months from the cardboard packaging and from underneath the plastic film. This release happens gradually, and because the gas is invisible and has a high odor threshold, concentrations in warehouses can build up significantly.
Legal framework
EtO is classified as a CMR substance: Carcinogenic, Mutagenic, and Reprotoxic. Due to its severe health effects, there is no safe threshold for exposure. In the Netherlands, a legal occupational exposure limit of 0.46 parts per million (ppm) or 0.84 mg/m³ applies as an 8-hour time-weighted average (TWA). However, employers are responsible for ensuring a safe working environment and are legally obliged to minimize exposure to CMR substances such as EtO as much as possible, even when levels remain below the limit value.
Why air filtration is important
Ventilation and filtration are important methods for reducing EtO levels in indoor environments. A proper supply of fresh air helps to prevent the formation of local concentration peaks (hotspots). However, the extraction of air to the outside and recirculation are subject to strict regulations, depending on local legal and environmental requirements. Air filtration is an attractive alternative, especially when ventilation alone is insufficient. Moreover, it is virtually energy-neutral, as it does not add extra heating or cooling load to the indoor climate.
HF-EtO
The HF-EtO is an advanced air cleaner specifically developed for the safe removal of ethylene oxide (EtO, C₂H₄O) from indoor air in industrial, logistics, or medical environments. This unit combines multiple filtration and oxidation technologies in one powerful and scalable system, and is designed with a focus on safety, effectiveness, and reliability.
Three phases
The filtration process consists of the following three main stages:
In this initial stage, coarse and fine particles are removed from the air using a pre-filter and an Electrostatic Precipitator (ESP), helping to protect and extend the lifespan of the downstream filtration components.
After the electrostatic particle removal in the first stage, the second stage focuses specifically on the purification of air from ethylene oxide gas (EtO). In this crucial phase, we offer two distinct solutions, tailored to the usage profile, budget, and desired level of effectiveness:
Premium Option: UV-TiOx Technology – Maximum Oxidation and Adsorption
The premium configuration uses an innovative combination of UV light and TiOx-activated carbon (TiOx-ACF).
This filtration method goes beyond traditional carbon-based approaches:
- UV light activates the TiOx catalyst surface, initiating photocatalytic oxidation of EtO molecules, as well as other gases and VOCs.
- As a result, harmful gases are not only adsorbed but also decomposed into harmless components such as CO₂ and H₂O.
- The self-regenerating properties of TiOx-ACF significantly extend the lifespan of the filter material—up to five times longer than conventional filters.
- Ideal for environments with higher EtO concentrations or prolonged exposure, such as cleanrooms or bulk storage of sterilized products.
Value Option: CKV3 Activated Carbon – Reliable and Cost-Efficient Core Solution
For situations with stable and lower background concentrations, or where a more cost-effective solution is preferred, the value configuration features a filter stage based on CKV3 high-grade activated carbon:
- Developed for effective adsorption of gases and VOCs under lower load conditions.
- Proven technology, widely used in logistics environments with controlled emissions.
- Simpler to maintain and more economical in both acquisition and operation.
- Ideal for applications where risk reduction is important, but without the need for photocatalytic breakdown.
The third and most critical stage consists of multiple layers of specially selected filtration media: Kinetic-425, optimized for EtO adsorption. The air is directed through these adsorption layers, where ethylene oxide is actively and safely captured.
Preventing hotspots
The integrated fan of the HF-EtO draws in air from the rear of the unit and propels the purified air back into the room through a patented triple-outlet discharge system. This design is engineered to enhance air circulation, minimize dead zones, and prevent hotspots.
What can you expect from the HF-EtO?
- Effectively removes ethylene oxide – proven and reliable
- Advanced filtration systems for industrial applications
- Improved air quality in logistics halls, sterilization facilities, and production environments
- Reduced health risks for employees
- Compliance with safety and environmental regulations
Step-by-step plan for a safe working environment
No two situations are alike when it comes to EtO. Every work environment has its own challenges, risks, and objectives. That’s why we guide companies step by step toward a structurally safe working environment, in close collaboration with a network of independent experts. This process is tailored to your specific needs and consists of four key phases.
Quick scan
A first on-site assessment aimed at evaluating potential risks and identifying critical areas requiring attention.
Detailed measurements
Accurate measurements of EtO concentrations in various zones and work processes.
Risk assessment (RI&E) considerations and definition of ambitions
Integration of findings into the Risk Inventory & Evaluation (RI&E), including the definition of a realistic yet ambitious reduction target.
Detailed design and implementation plan
Development and implementation of a technical and organizational plan for air purification, monitoring, and compliance assurance.
See all our products
DFI-Series industrial air cleaners
- Ensures dust reduction of up to 90%
- customised solution based on dust concentration
- Suitable for warehouses, industrial and logistic halls
Pure Air Shield 3300
- Removes fine dust, viruses and bacteria
- Suitable for large spaces (from 200m2)
- SGS certified, proven effective
HF-Series Industrial air cleaners
- Filters up to 90% of the contamination
- Suitable for industrial environments
- Customized solution for different pollution sources
SF-Series Kitchen Air Filtration
- Filters more than 90% grease and soot particles from the air
- Ensures less risk of fire
- Total solution for every kitchen air problem
Smoke 'n Go
- Leaves no traces of tobacco smoke and unpleasant odours
- Electrostatic filter for high efficiency and low operating costs
- Tested and certified by BGIA, TUV, ECN
VisionAir Blue Line
- Wide range of applications thanks to unique filter combinations
- SGS certified and therefore proven effective
- Has a positive effect on productivity and absenteeism
ETO air filtration
- Proven effective removal of ethylene oxide
- Contributes to a healthy and safe working environment
- Specially developed for logistics halls and warehouses
Would you like to know if EtO filtration is the right solution for your organization?
