Product description
A heatable filter housing is used during integrity testing of hydrophobic membrane filters, particularly when performing water intrusion tests (WIT). The housing allows the filter element to be maintained at a controlled temperature during testing, ensuring stable and reproducible test conditions.
Technical overview
Hydrophobic membrane filters such as PTFE filters are often tested using the water intrusion method. During this test the filter must be maintained within a defined temperature range to ensure accurate measurement of water penetration through the membrane.
A heatable filter housing provides controlled heating of the filter element and surrounding housing, allowing reliable testing of cartridge filters under standardized conditions.
Operating principle
During water intrusion testing, the hydrophobic filter is exposed to water under controlled pressure conditions. The test measures the amount of water that penetrates the membrane structure.
Temperature has a significant influence on the physical properties of water and the membrane. The heated housing maintains stable test conditions, allowing accurate measurement of water intrusion values.
The heating system ensures the filter housing remains within the required temperature range throughout the test procedure.
Material options
Heatable filter housings are typically manufactured from materials compatible with pharmaceutical and industrial filtration processes.
- Stainless steel housing construction
- Integrated electrical heating elements
- Thermal insulation components
- Industrial temperature control systems
Material selection depends on process compatibility and operating temperature requirements.
Available micron ratings
The housing itself does not determine filtration performance. Instead, it is designed to accommodate cartridge filters used in integrity testing.
Typical filters tested include:
- Hydrophobic PTFE membrane filters
- Cartridge filters used in sterile air or gas filtration
- Other membrane filters requiring temperature-controlled integrity testing
Design and construction
Heatable filter housings are designed to integrate with standard filter integrity testing systems.
Typical design features include:
- Cartridge filter housing with integrated heating
- Temperature control and monitoring system
- Pressure-resistant housing construction
- Connections compatible with integrity testing equipment
The design allows reliable operation during repeated integrity testing procedures.
Typical applications
- Water intrusion testing (WIT) of hydrophobic membrane filters
- Integrity testing of PTFE cartridge filters
- Pharmaceutical sterile filtration validation
- Biotechnology filtration processes
- High-purity gas filtration systems
Key benefits
- Stable temperature during integrity testing
- Improved accuracy of water intrusion test results
- Compatible with integrity testing instruments
- Suitable for hydrophobic membrane filters
- Designed for laboratory and production environments
Configuration and quotation
To configure a heatable filter housing for integrity testing, the following parameters should be specified:
- Cartridge filter size and type
- Required operating temperature range
- Connection interface to the integrity tester
- Maximum operating pressure
- Installation environment
Providing this information allows the housing configuration to be matched to the intended integrity testing application.