PolyCap TF 75 PTFE Capsule Filter SKU: 6700-7504

PTFE Capsule Filters - 6700-7504

From HPLC mobile phase preparation to process gas venting, PTFE capsule filters handle the chemically aggressive applications where other membrane materials degrade or fail. Built for consistent results, pleated PTFE membrane construction provides extended surface area for solvent and gas filtration, maintaining flow performance across high-volume batches where chemical resistance is the primary selection criterion. The result is a streamlined filtration step that integrates directly into fluid transfer systems, reducing hold times and minimizing the manual handling that compromises sterility assurance.

Key PTFE Membrane Characteristics

• Rated for continuous operation at temperatures up to 121 degrees Celsius, the capsule maintains structural integrity and retention performance across the normal process temperature range.
• The pleated PTFE membrane configuration within the capsule housing provides sufficient surface area for production-scale solvent filtration without the pressure drops associated with flat disc PTFE devices.
• PTFE membrane capsules resist degradation by virtually all organic solvents, strong acids, bases, and oxidizing agents, providing universal chemical compatibility for aggressive filtration applications.
• Single-membrane construction simplifies integrity test interpretation, as the bubble point and diffusion flow values correspond directly to the rated retention membrane without prefilter interference.
• Capsule holdup volume of 22 milliliters represents the fluid retained within the device after filtration, an important factor when calculating yield for high-value pharmaceutical products.

Key Capsule Construction Features

• Polypropylene capsule housing provides broad chemical compatibility from pH 1 to 14, resisting the acids, bases, and process chemicals that degrade alternative housing materials.
• Single-use polypropylene capsule construction eliminates cleaning validation requirements, reducing the regulatory burden and turnaround time associated with reusable stainless steel filter housings.
• The sealed polypropylene housing is individually integrity-tested during manufacturing, verifying membrane installation and housing seal quality before the device leaves the production facility.
• Thermally fused polypropylene construction eliminates adhesives, binders, and O-rings from the fluid path, reducing extractable contamination and simplifying material qualification.

Your laboratory's filtration throughput depends not only on membrane retention characteristics but on the practical factors of device connection, priming, and changeover that capsule filters are specifically engineered to optimize. For laboratories and production facilities filtering HPLC mobile phases, aggressive chemicals, or sterile gases, PTFE capsule filters provide the chemical inertness your purity standards demand. Make the decision for consistency and reliability, ensuring that your laboratory maintains its reputation for high-quality, error-free output.

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.

Bubble Point (psi)

7 psi

Burst Pressure (psi)

60 psi

Capsule Format

Polycap TF 75

Compliance Standards

ISO 9001

Construction

Polypropylene

Diameter

7.5 cm

Filling Bell (Yes/ No)

No

Filtration Area

890 cm²

Holdup Volume

22 mL

Inlet Connection

1/4 to 3/8 in. stepped barb

Length

13.8 cm

Material

PTFE

Max Batch Volume

Large-volume batch processing

Maximum Operating Pressure

60 psi

Maximum Operating Temperature (°C)

121 °C

Outlet Connection

1/4 to 3/8 in. stepped barb

Pack Count

1

Pore Size (µm)

0.45

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclave

Vent (Yes/ No)

No

Wettability

Hydrophobic

• Chemical Processing - Filtration of strong acids, bases, and aggressive organic chemicals that degrade PES, PVDF, and nylon membranes.
• Tank Venting - Hydrophobic membrane barrier prevents microbial ingress while allowing pressure equalization in process tank headspaces.
• HPLC Preparation - Particle removal from organic and mixed mobile phases prior to high-performance liquid chromatography analysis.
• Solvent Recovery - Clarification of recycled organic solvents to remove particulates accumulated during previous processing operations.
• Air Filtration - Point-of-use filtration of compressed air and nitrogen gas streams supplying clean manufacturing environments.
• Vent Protection - Membrane barrier filtration for fermentation vessel exhaust and bioreactor off-gas systems in bioprocessing facilities.