Syringe Filter
High quality and cost effective syringe filters are available in a broad range of membrane materials with sterile and non-sterile packaging options.
Universal Features:
- HPLC Certified
- Disposable
- Luer-Lok™ and pressure fitting
- Ultrasonically bonded for reliability
- Filter media type clearly inscribed on barrel
- Excellent unit-to-unit and lot-to-lot reproducibility and consistency
- High purity virgin polypropylene housing, no dyes or pigments added
- Every unit type is available as an individually wrapped gamma sterilized pack
- Unique concentric funnel shaped barrel increases volume and decreases back pressure
Specific Features for each type:
Cellulose acetate (CA) - Hydrophilic
- Very low binding capacity for proteins.
- Material is nitrate-free making it suitable for groundwater & EPA ASTM’s.
- For filtration under sterile conditions
- Filtration and clarification of biological fluids, sterilization of media additives and serum
- Sample preparation of aqueous solutions
- For applications requiring maximum sample recovery
- Sample preparation of protein-based HPLC solutions
- Designed to sterilize and remove particulates from even the most viscous proteinaceous samples
- Filtration of tissues culture media with glass fiber prefilter
Glass Fiber Prefilters
- For viscose solutions or for turbid liquids
- Glass microfiber prefilter raises absorption capacity and loading
- Ideal for use as a prefilter in series with other syringe filters
- Glass microfiber filter media enclosed in this series is binderless 1.0µm retention
- Reduces clogging of the membrane, so ideal as a prefilter to increase throughput and flow rate
- Ideal for dissolution testing and general filtration
- Applicable to all membrane types, allowing higher flow rates
- Good compatibility with strong acids, bases and organic solvents
- Similar in composition to I.W. Tremont binderless borosilicate glass microfiber media available as disks and sheets
Mixed Cellulose Esters (MCE) - Hydrophilic
- This membrane is recommended for all filtrations in aqueous or polar media, bacteria filtration
- Ideal when maximum protein recovery in filtrate is crucial
- Used for filtration and inspection of gas, oil and alcohol particulate and bacteria
- Combined with glass microfiber prefilter, ideal for tissue culture media and sensitive biological samples
- Sample filtration - prefilter increases yield
Polyamide/Nylon (PA) - Hydrophilic
- Hydrophilic material; it is recommended for filtration of aqueous or organic/aqueous medium polar liquids.
- Commonly used for general laboratory filtration and filtration of HPLC and GC samples prior to injection
- Filtration of aqueous and organic-aqueous polar medium liquids
- Dissolution sample analysis
- Suitable for use with high pH samples
- Since it binds proteins it is NOT suitable for protein recovery applications
- With microfiber prefilter higher absorption capacity for contamination
Polyethersulfone (PES) - Hydrophilic
- High filtration flow rates
- An inherently low affinity for proteins.
- Low extractables
- Introduction of additives into tissue culture vessel.
- Certified for Ion Chromatography
- Final filtration of bacteriophage and infusion solutions
- Tissue culture, proteins, buffer and nucleic acids filtration
- Ideal for applications requiring maximum sample recovery
- Filter hybridization solutions and probe to reduce backgrounds
- Food, beverages and ultra pure water final filtration
- Sterile product individually blister packed
Polypropylene (PP)
- The polypropylene membrane is resistant to many organic solvents and slightly hydrophobic
- Useful for aqueous and organic solutions
- Low non-specific protein binding
Polytetrafluoroethylene (PTFE) - Hydrophilic or Hydrophobic
- PTFE membranes are inherently hydrophobic; they are ideal for the filtration of nonpolar liquids and gases.
- Very resistant to solvents as well as acids or bases.
- Can be made more hydrophilic by flushing with alcohol, followed by water
- Used for filtering and de-gassing chromatography solvents
- Permits optimal utilization of small sample volumes
- Excellent chemical compatibility for filtering harsh chemicals that destroy other membrane materials
- Moisture barrier for venting applications and vacuum pump line protection
- Ideal for aerosol sampling
- Filter viscous organic based HPLC samples
- After pre-wetting with alcohol, may be used for fine particle removal of aqueous and mild organic solutions in Ion Chromatography
Polyvinylidene difluoride (PVDF) – Hydrophobic
- This membrane features a stability and hydrophobic interactions similar to PTFE.
- Recommended especially for filtration of water-soluble oligomers and polymers, e.g. protein solutions.
- Can also be used for the filtration of hydrophobic substances in different organic solvents.