Pura Disc 4 mm PVDF Syringe Filters, 0.2um, 100/Pk
Whatman SKU: 6779-0402

Whatman Puradisc PVDF Syringe Filters, 0.2 µm, 4 mm, 100/Pk - 6779-0402

Whatman applies the same process controls across its filtration portfolio, verifying rated performance at the production lot level. Syringe filters give the analyst a single-use device for clarifying samples right at the bench. Ultra-low-binding PVDF preserves dilute proteins and analytes in the filtrate and holds up to alcohols and mild hydrocarbon solvents. Polypropylene construction resists chemical degradation from routine sample matrices and holds extractables low for sensitive analyses. When method reproducibility rests on consistent sample prep, syringe filtration holds that standard injection after injection.

Technical Specifications

• Resists HPLC mobile phases, alcohols, and mild hydrocarbons
• Absolute pore size rating gives consistent results across protocols
• Thin membrane structure sustains high flow for fast sample throughput
• Mechanically durable membrane holds integrity under filtration pressure
• Ultra-low protein binding preserves dilute analytes for maximum recovery

Housing Specifications

• Medical-grade polypropylene with broad chemical compatibility
• Thermal-bonded construction keeps adhesives out of the fluid path
• Low extractable contribution protects sensitive downstream analyses
• Optimized internal geometry minimizes backpressure in service

A clean particulate separation keeps your aqueous sample preparation dependable. Consistent aqueous clarification keeps your sample preparation moving as a dependable step in your aqueous sample prep. Connect with our customer support technicians for chemical compatibility guidance and the right filtration product for your workflow.

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

Bubble Point (psi)

1.8 bar (26 psi)

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

4mm

Filtration Area

0.2cm²

Holdup Volume

<10µl

Material

Polyvinylidene Difluoride (PVDF)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

100°C

Pack Count

100

Pore Size (µm)

0.2

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 2ml

Wettability

Hydrophobic

• Protein Analysis - Ultra-low protein binding ensures that your expensive protein samples are not lost to the filter matrix
• Western Blotting - Optimized for use in preparing samples for downstream blotting techniques where purity is paramount
• HPLC Sample Prep - PVDF provides a great balance of chemical compatibility and low background noise for sensitive UV detection
• Clarification of Biologicals - Perfect for removing particulates from biological fluids without removing the target biomolecules
• Environmental Monitoring - Ideal for filtering contaminants in water and wastewater analysis to ensure regulatory compliance
• Analytical Sample Prep - Optimized to ensure data integrity by effectively filtering contaminants before instrumental analysis