01
Filtration objective
Clarification, bioburden reduction and sterilising filtration are different claims.
Application guide
Pharmaceutical Filtration Media
Depth pads, enclosed sheet modules and cartridges for pharmaceutical clarification and pre-filtration, selected within the user's validated quality system.
Process requirements
What the filtration duty must achieve
Pharmaceutical filtration can range from coarse clarification of intermediates to pre-filtration ahead of validated final membranes. The filtration objective, product-contact status and contamination controls must be explicitly defined; the presence of a fine micron label does not create a sterile or validated process.
Media selection should control visible and sub-visible particulate while meeting chemical compatibility, extractables, fibre release, traceability and batch-record needs. Process development should include differential pressure, flow, yield and integrity acceptance criteria.
Process design
A staged filtration approach
Use open depth media or cartridges to remove heavy suspended solids, then a clarifying pulp pad or lenticular module where broad particle loading is expected. A PP pleated cartridge may provide a defined polishing stage. If microbial retention is required, a separately validated membrane and process are normally needed downstream.
Each change of media, supplier, sanitisation cycle or operating condition should be evaluated through the site change-control and qualification system.
Selection variables
Data that changes media performance
02
Product compatibility
Assess pH, solvents, actives, temperature and exposure duration.
03
Extractables
Request grade-specific data appropriate to product risk.
04
Retention evidence
Define nominal/absolute efficiency and required test method.
05
Batch traceability
Agree certificates, lot identification and change notification.
06
Sanitation
Confirm media and seal limits for rinse, hot water, steam or chemicals.
Sri Bharathi portfolio
Related products for the filtration train
Technical questions
Application FAQs
Does a 0.2 µm cartridge guarantee sterility?
No. Sterilising-grade performance requires grade-specific validation against an appropriate microbial challenge and a controlled process.
What documents should be requested?
Depending on risk: technical data sheet, material declaration, lot certificate, contact statements, extractables information, change notification and relevant validation data.
Why use depth media before a membrane?
Depth media can remove a broad solids load and protect the more precise downstream membrane, extending service life.
Can filter pads be used for APIs?
Potentially, but compatibility, product loss, extractables, cleaning and regulatory documentation must be assessed for the exact grade and process.
Application support
Discuss the full process, not an isolated micron number
Share feed quality, temperature, viscosity, solids, batch volume, existing equipment, desired result and required quality documents so an appropriate trial sequence can be proposed.