Product description
A PES membrane capsule filter is a compact disposable filtration unit designed for precision liquid filtration in laboratory and industrial environments. Capsule filters integrate the membrane and housing into a sealed unit, allowing quick installation and reducing the need for separate filter housings.
Technical overview
Polyethersulfone (PES) membrane capsule filters are commonly used for particulate removal and fine filtration of aqueous process fluids. The hydrophilic PES membrane supports stable wetting behaviour and is widely applied where consistent particle retention is required.
The capsule format simplifies handling in laboratories, pilot plants and small-batch production by providing a pre-assembled filter element with defined pore size options and standardized connections. :contentReference[oaicite:0]{index=0}
Operating principle
During operation, the process liquid enters the capsule through the inlet connection and flows through the PES membrane. The membrane contains controlled pores that retain particles based on the selected micron rating, while filtrate exits via the outlet connection.
For aqueous solutions, the hydrophilic membrane enables efficient wetting and predictable start-up behaviour without solvent pre-wetting in most standard laboratory applications.
Material options
Typical construction materials include:
- Filter media: Polyethersulfone (PES)
- Support layers: Polypropylene
- Capsule housing: Polypropylene
- Optional filling bell component: Polycarbonate (configuration-dependent)
Material selection should be confirmed against the process fluid and cleaning approach used.
Available micron ratings
Typical pore size options include: :contentReference[oaicite:1]{index=1}
- 0.03 µm
- 0.04 µm
- 0.1 µm
- 0.2 µm
- 0.45 µm
- 0.65 µm
- 0.8 µm
- 1.2 µm
- 3.0 µm
- 5.0 µm
Micron rating selection depends on the required retention level, upstream solids loading, and downstream protection requirements.
Design and construction
Capsule filters are designed as self-contained filtration units combining membrane media and housing in a single disposable device.
Typical design characteristics include: :contentReference[oaicite:2]{index=2}
- Integrated membrane and housing design for single-use filtration
- Multiple connection options to suit laboratory and process lines
- Available capsule lengths: 1.5", 2.5", 5" and 10"
- Typical filtration area around 300 cm² (size-dependent)
- Maximum operating pressure up to approximately 5 bar at 20°C
- Maximum operating temperature up to approximately 80°C
Capsule length selection impacts effective filtration area and influences throughput and dirt holding capacity.
Typical applications
- Laboratory sample preparation and clarification
- Preparation of aqueous buffers and process solutions
- Biotechnology and pharmaceutical R&D filtration
- Small-batch process filtration and pilot-scale filtration
- Fine chemical and specialty chemical filtration (aqueous systems)
- Final filtration before analytical or downstream process steps
Key benefits
- Hydrophilic PES membrane suitable for aqueous filtration
- Multiple micron ratings for clarification through fine filtration
- Disposable capsule format reduces handling and cleaning requirements
- Compact installation in laboratory and pilot-scale setups
- Standardized connections for repeatable integration into test rigs and process lines
Configuration and quotation
To specify a PES capsule filter, provide the following parameters:
- Micron rating / pore size required
- Capsule length (1.5", 2.5", 5" or 10")
- Inlet/outlet connection type
- Process liquid description (aqueous solution type, additives, viscosity)
- Operating pressure and temperature
- Any requirements for venting, filling bell, or installation orientation
These parameters allow selection of the correct capsule configuration for the filtration setup.