Process Filtration
Process filtration is the use of membrane and depth filtration technologies to remove impurities, reduce bioburden, ensure sterility, and concentrate or purify fluids at critical stages of a pharmaceutical bioprocessing workflow. It is a core GMP unit operation running through both upstream and downstream processing — and the quality of filtration at each step has a direct impact on product safety, yield, and regulatory compliance with WHO GMP, USFDA, and EU GMP standards.
Pharmaco Global’s process filtration range supports pharmaceutical and biopharmaceutical applications from early-stage development through to full-scale commercial manufacturing. Solutions are designed to scale alongside your process — from lab-scale cartridge filters and capsule filters through to validated production-scale filtration systems — without requiring a complete change in technology, validation approach, or regulatory documentation.
Frequently Asked Questions
Process filtration removes particulates, microorganisms, and contaminants from bulk pharmaceutical liquids, gases, and process streams during drug manufacturing. It encompasses sterilising-grade membrane filtration, depth filtration, bioburden reduction, and gas/vent filtration — applied across API synthesis, formulation, aseptic fill-finish, and water purification operations.
Depth filters trap particles throughout their fibrous matrix via adsorption and mechanical retention — used for crude bulk clarification and prefiltration. Membrane filters retain particles at a defined pore size on their surface — used for sterilising filtration (0.22 µm) and precise microbial removal ahead of aseptic filling.
A sterilising-grade filter is validated to completely remove viable microorganisms from a pharmaceutical process stream, producing a sterile effluent. The standard pore size is 0.22 µm. It is validated using Brevundimonas diminuta at ≥10⁷ CFU/cm² per FDA guidance and PDA Technical Report No. 26.
Pharmaceutical process filters include: sterilising-grade membrane cartridges (0.22 µm); depth filter sheets and capsules for clarification; bioburden reduction filters (0.45–1.0 µm); virus filters (20 nm) for biologics; hydrophobic PTFE vent filters for tank venting; and prefiltration cartridges to protect downstream sterilising filters from premature blockage.
Filter integrity testing confirms a process filter's membrane is intact and performing its validated function before and after filtration. Bubble point and forward-flow diffusion tests are the standard methods. A failed post-use integrity test triggers a GMP investigation and potential rejection of the affected pharmaceutical batch.
Select process filters based on: membrane compatibility with the drug formulation; required pore size (0.22 µm sterilising or 0.45–10 µm clarification); required flow rate and pressure; extractables/leachables profile; single-use versus reusable format; and availability of FDA Drug Master File (DMF) and USP <87>/<88> biocompatibility documentation.
A vent filter is a hydrophobic 0.22 µm PTFE membrane filter fitted to pharmaceutical vessels, tanks, and bioreactors. It filters air and gas streams entering or leaving the vessel during filling, emptying, or pressure equalisation — preventing microbial and particulate contamination of the sterile product headspace.
Single-use pharmaceutical process filtration formats include capsule filters, disposable filter cartridges, filter bags, and fully assembled single-use filter skids. These formats eliminate cleaning validation, reduce cross-contamination risk, and accelerate batch changeover — making them the preferred choice for biologics, clinical manufacturing, and multi-product pharmaceutical facilities.
Yes, all our products are designed and sourced to meet international regulatory standards, including GMP, USFDA, EU-GMP, WHO, and other relevant compliance requirements.
Absolutely. Our solutions are engineered for seamless integration with existing systems, ensuring minimal disruption and optimal performance within your current setup.
Yes, our team offers technical consultation to help you choose the most suitable product based on your process requirements, facility design, and compliance needs.
Yes, all our products are aligned with our turnkey execution approach, ensuring compatibility with overall facility design, engineering, and operational requirements.
Yes, we provide customised solutions tailored to your process, capacity, and regulatory requirements to ensure optimal performance and efficiency.
Our products are used across pharmaceutical manufacturing, biotechnology, nutraceuticals, research laboratories, and regulated healthcare environments.
We follow strict quality standards and work with trusted technologies and manufacturing processes to ensure consistent performance, durability, and compliance.
Yes, we offer ongoing technical support to ensure smooth operation, performance optimisation, and long-term reliability of all supplied systems and components.
