Pura Disc 25mm PVDF Syringe Filters, 0.45um, 200 Pk
Whatman SKU: 6747-2504

Whatman Puradisc PVDF Syringe Filters, 0.45 µm, 25 mm, 200/Pk - 6747-2504

Whatman draws on Cytiva's broader manufacturing oversight while continuing a legacy of filtration work that touches laboratory research, environmental monitoring, and industrial processing alike. Syringe filters replace the separate holder and vacuum apparatus of bulk filtration with a single disposable unit, eliminating cleaning between samples. PVDF holds up to alcohols and mild hydrocarbon solvents and wets HPLC samples despite a hydrophobic fluoropolymer backbone underneath. The polypropylene housing presses snugly against the membrane during the pass while keeping the sample chemically unaltered across the pass and sustains efficient flow on viscous samples. Where analytical results depend on clean samples, the preparation step stays consistent from sample to sample through a pre-tested syringe filter.

Technical Specifications

• Fluorinated polymer chemistry resists ozone, UV, and ionizing radiation
• Gamma irradiation sterilization causes no chain scission unlike polypropylene membranes
• Autoclave sterilization cycles leave pore structure and flow performance intact
• Limiting oxygen index runs high, supporting flame resistance and low smoke
• Adsorptive loss of HPLC analytes stays immeasurably low

Housing Specifications

• Polypropylene density near 0.90 g/cm3 keeps housing weight low relative to denser engineering plastics
• Optimized internal geometry minimizes backpressure in service
• Housing tolerates elevated-temperature aqueous and solvent sample filtration up to about 80°C without softening.
• Rigid polypropylene body maintains its geometry through routine filtration pressure

Clarify your routine aqueous samples in a single pass and cut down on juggling multiple filter types at the bench. Consistent aqueous clarification clears particulates without slowing your bench routine from the first sample of the day through the last. Ask our customer support technicians for chemical compatibility guidance on your specific filtration application.

For more information about chemical compatibility, please review our Chemical Compatibility Chart.

Bubble Point (psi)

1.2 bar (17 psi)

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

25mm

Filtration Area

4.2cm²

Holdup Volume

<100µl

Material

Polyvinylidene Difluoride (PVDF)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

200

Pore Size (µm)

0.45

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophobic

• Beverage QC - Clarifies wine, beer, and juice samples ahead of HPLC testing for organic acids, sugars, and preservatives.
• Trace Analysis - Prevents non-specific binding in trace analysis, keeping low-concentration analytes in solution for reliable detection.
• Microbiome Sampling - Concentrates waterborne microbial cells on a low-binding membrane ahead of DNA extraction and metagenomics sequencing.
• Biological Samples - Clarifies protein-rich solutions without loss of target molecules, preserving sample integrity for critical downstream assays.
• Pharmaceutical QC - Supports routine quality control testing by reliably filtering mild organic solvent mixtures and drug formulations daily.
• Water Quality Monitoring - Clarifies environmental and drinking water samples ahead of turbidity, ion, or contaminant testing in monitoring programs.