Polypropylene (PP) Capsule Filters - SF14967
Polypropylene capsule filters provide aggressive chemical resistance across the full pH range, handling strong acids, bases, and organic solvents that attack other membrane materials. Additionally, the depth-style polypropylene media within the capsule housing provides high dirt-holding capacity for clarification and prefiltration applications where particulate loads would rapidly foul membrane-based devices. As designed, the outcome is a validated filtration barrier that arrives ready for process integration, supporting the single-use manufacturing strategies adopted by modern pharmaceutical and biotechnology facilities.
Key Polypropylene (PP) Membrane Characteristics
- Polypropylene capsule filters withstand aggressive chemical environments across the full pH range, from concentrated acids to strong bases, without membrane degradation or extractable release.
- Rated for continuous operation at temperatures up to 80 degrees Celsius, the capsule maintains structural integrity and retention performance across the normal process temperature range.
- The depth-type polypropylene media provides high dirt-holding capacity for prefiltration and clarification, extending the service life of downstream sterilizing-grade membrane filters.
- The hydrophobic polypropylene matrix provides effective filtration of organic solvents and non-aqueous process fluids without the pre-wetting steps required for aqueous applications.
- The non-sterile capsule format offers a cost-effective option for applications where particle removal rather than sterility assurance is the primary filtration objective.
Key Capsule Construction Features
- Thermally fused polypropylene construction eliminates adhesives, binders, and O-rings from the fluid path, reducing extractable contamination and simplifying material qualification.
- The sealed polypropylene housing is individually integrity-tested during manufacturing, verifying membrane installation and housing seal quality before the device leaves the production facility.
- Polypropylene capsule housing provides broad chemical compatibility from pH 1 to 14, resisting the acids, bases, and process chemicals that degrade alternative housing materials.
- Polypropylene housing materials provide documented biocompatibility and low extractable profiles, supporting integration into pharmaceutical and food-processing filtration applications.
As batch volumes and regulatory expectations continue to grow, your capsule filter selection becomes a process design decision that affects sterility assurance, product recovery, and operational cost per liter filtered. If your process generates high particulate loads or involves chemically aggressive fluids, polypropylene capsule construction provides the chemical breadth and dirt-holding capacity your clarification step requires. Secure your research outcomes by partnering with a filtration solution that understands your need for speed, accuracy, and reproducibility.
Sterilization Guidance
Standard autoclave cycles at 121 degrees Celsius are compatible with the polypropylene housing and membrane assembly, allowing preparation for sterile applications at the point of use.
For more information about chemical compatibility, please review our Chemical Compatibility Chart.
- Compliance Standards
- ISO 9001
- Connection Type
- 3/8 in. hose barb
- Construction
- Polypropylene
- Diameter
- 72mm
- Dimensions
- 72mm x 100mm
- Filling Bell (Yes/ No)
- No
- Filtration Area
- 500cm²
- Flow Rate
- 1.43 L/min at 0.1 bar
- Holdup Volume
- 25mL
- Inlet Connection
- 3/8 in. Hose Barb
- Length
- 100mm
- Material
- PP
- Max Batch Volume
- <20L
- Maximum Operating Pressure
- 75.4psi
- Maximum Operating Temperature (°C)
- 80°C
- Outlet Connection
- 3/8 in. Hose Barb
- Pack Count
- 1
- Pore Size (µm)
- 0.45
- Prefilter (Yes/No)
- No
- Sterility
- Nonsterile
- Sterilization
- Autoclavable at 121°C for 30 mins
- Vent (Yes/ No)
- Yes
- Weight
- 0.25
- Wettability
- Hydrophobic
- Chemical Clarification - Removal of suspended solids from aggressive chemical solutions across the full pH range from acids to bases.
- Prefiltration - Coarse particle removal upstream of final membrane filters to extend downstream filter service life and throughput.
- Process Protection - Guard filtration upstream of sensitive analytical instruments, process equipment, and final membrane filters.
- Water Treatment - Prefiltration and clarification of process water streams in manufacturing, laboratory, and utility system applications.
- Solvent Clarification - Removal of particulates from organic solvents and chemical solutions using chemically resistant polypropylene media.
- Food and Beverage - Clarification of beverages, process water, and food-grade fluids using polypropylene construction materials with documented chemical compatibility.