RATEC HEPA/ULPA filter units remove even the finest particles, germs and aerosols from the air that other filters simply let pass. With HEPA or ULPA filter cells, they provide controlled, clean working environments in pharma, labs and electronics manufacturing as the final filtration stage. We design each unit entirely to your requirements, and build the housing and unit in our own plant in St. Veit an der Glan, depending on the project.
Table of Contents
What is a HEPA/ULPA filter unit?
A HEPA/ULPA filter unit is a high-performance filter for particles so small that they remain suspended in the air, such as fine dust, smoke, aerosols or germs. HEPA stands for High Efficiency Particulate Air, ULPA for Ultra Low Penetration Air. The filter cells consist of a very fine, pleated filter medium that reliably retains particles in the sub-micrometer range.
In an extraction system, HEPA/ULPA filter units are usually installed as the final stage after the cartridge filter. This means only the finest particles reach them, and the expensive filter cells last longer.
Filter classes to EN 1822
How well a HEPA/ULPA filter unit separates particles is defined by the filter classes in EN 1822. Internationally, the equivalent standard series ISO 29463 applies.
| Filter class | Separation efficiency (integral) | Typical application |
|---|---|---|
| H13 | at least 99.95% | Pharma, lab, extraction of hazardous dusts |
| H14 | at least 99.995% | Cleanrooms, sterile areas |
| U15 to U17 | at least 99.9995% to 99.999995% | Semiconductor and electronics manufacturing |
Which class is used depends on your requirements, your process and your industry specifications. We use only tested filter cells from specialized manufacturers, matched to the required class.
Your benefits
- Highest purity: Separation of the finest particles and aerosols.
- Compact design: robust housing with integrated filter cells.
- Easy to retrofit: can be integrated into existing extraction systems.
- Tailored to your requirements: filter class, size and design individually matched.
Technical Specifications
| Feature | High-Efficiency Particulate Air (HEPA) / Ultra-Low Penetration Air (ULPA) Filters |
|---|---|
| Application | Pharma, lab, electronics manufacturing |
| Filter cells | HEPA or ULPA, depending on requirements |
| Housing | robust, with integrated filter cells |
| Integration | easy to integrate into existing extraction systems |
| Airflow, dimensions, connections | designed individually to your requirements |
What matters in the design
- Purity requirement: required filter class, specifications from your industry.
- Airflow: volume flow and permissible pressure drop.
- Pre-filtration: which stages are installed upstream of the HEPA/ULPA filter unit.
- Installation situation: space, connection to the existing system, access for filter changes.
Complete solution from a single source
RATEC supplies HEPA/ULPA filter units as individual retrofit units or as part of a complete extraction system—from consulting and planning to technical design and manufacturing, through to installation and commissioning. We manufacture in our own plant in Carinthia, certified to ISO 9001, EN 1090-1 and ISO 3834-2.
Do you need top-level clean air?
Tell us your application, required filter class and airflow. We’ll get back to you with a concrete proposal.