Pura Disc 25mm Dp PP Syringe Filters, 0.45um, 200 Pk
Whatman SKU: 6788-2504

Whatman Puradisc Polypropylene (PP) Syringe Filters, 0.45 µm, 25 mm, 200/Pk - 6788-2504

Whatman standardizes its manufacturing platform to the point that consistency and thorough lot-level records come as a default, exactly what analytical laboratory work demands. Because each syringe filter is dedicated to one sample, a failed or contaminated filtration never delays the next analyst's run waiting on a shared holder. Polypropylene tolerates solvents and acids that degrade many membranes and keeps water out during solvent and gas-purge steps. Polypropylene construction resists chemical degradation from routine sample matrices while holding its form through high-temperature sample preparation conditions and presses snugly against the membrane during the pass. Where small-volume samples must reach the instrument clean, low hold-up volume keeps sample loss minimal while the instrument stays protected from particulate damage.

Technical Specifications

• Withstands fluids across the full pH range from 1 to 14
• Saturated hydrocarbon backbone resists the hydrolytic degradation common in ester-linked filter media
• Anion leaching stays very low from the matrix
• Wets through readily under modest differential pressure despite an inherently hydrophobic surface
• Extractable levels remain very low across the depth matrix

Housing Specifications

• Translucent housing wall allows visual confirmation of sample flow during filtration
• The seal formed against the membrane blocks bypass at rated operating pressure
• Plasticizer-free polyolefin construction keeps the fluid path clean
• Minimal intrinsic autofluorescence from the polypropylene housing supports background-sensitive fluorescence-based assay work downstream.

Filtering aggressive solvents and reagents through a filter that holds up to the chemistry keeps your sample prep reliable. Reliable solvent prefiltration clears particulates from your organic samples before it moves on to your next process step. Contact Tisch Scientific for technical guidance on selecting the right filtration product for your specific application requirements.

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

Bubble Point (psi)

(Hydrophobic)

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

25mm

Filtration Area

4.2cm²

Holdup Volume

<100µl

Material

Polypropylene Depth Filter (DpPP)

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

• Solvent Clarification - Resists a broad range of organic solvents, offering a versatile choice for general chemical clarification tasks in the lab.
• Injector Port Protection - Removes cell debris and protein precipitates before injection, guarding HPLC and GC autosampler needles from wear.
• Bulk Solvent Filtration - Handles pressure fluctuations during syringe filtration of bulk solvents and lab reagents reliably.
• General Lab Use - Supports the clarification of diverse solvent-based and process liquid streams, providing a reliable and cost-effective solution.
• Prefiltration Support - Protects downstream membrane filters by capturing gross contaminants, extending the purification system life.
• Trace Metal Analysis Prep - Introduces minimal metal ion background into the filtrate, supporting sample prep ahead of ICP-OES or ICP-MS analysis.