Pura Disc 25mm Dp PP Syringe Filters, 0.45um, 1000 Pk
Whatman SKU: 6790-2504

Whatman Puradisc Polypropylene (PP) Syringe Filters, 0.45 µm, 25 mm, 1000/Pk - 6790-2504

Whatman's filtration expertise, refined across a century-plus of disciplined manufacturing, has made its name synonymous with laboratory-grade quality worldwide. Syringe filters span a wide range of membrane chemistries and pore sizes, so the format can be matched to the sample matrix and solvent system in use. Hydrophobic polypropylene suits solvent and non-aqueous sample streams while sustaining throughput as a depth medium and holds up to aggressive process chemistries. The polypropylene housing holds its seal true run after run and maintains structural integrity through elevated-temperature sample preparation. When chromatographic methods demand particle-free injections, the column stays clean from run to run, protecting method performance and column life.

Technical Specifications

• Saturated hydrocarbon backbone resists the hydrolytic degradation common in ester-linked filter media
• Sustains continuous operation at temperatures up to 80°C, with brief tolerance to 130°C
• Captures coarse particles near the surface and fine particles deeper within
• Withstands repeated steam autoclave cycles at 121°C without structural degradation
• Aqueous liquid is repelled while air passes freely through

Housing Specifications

• Medical-grade polypropylene with broad chemical compatibility
• Minimal extractable release from the housing supports sensitive analytical work downstream
• Minimal intrinsic autofluorescence from the polypropylene housing supports background-sensitive fluorescence-based assay work downstream.
• Standardized luer connection geometry provides secure engagement with standard syringe tips

Handling the harsh solvents your methods demand means choosing a filter built to withstand what passes through it, run after run. Solvent-stream filtration handles the solvents and reagents your methods rely on so your filter holds its integrity through the run. Ask about Whatman's quality documentation to confirm your filtration step meets a recognized laboratory-science standard.

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

1000

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.
• Bulk Solvent Filtration - Handles pressure fluctuations during syringe filtration of bulk solvents and lab reagents reliably.
• Sample Cleanup - Clarifies organic solvents during synthesis and purification steps, helping remove reaction byproducts and debris before analysis.
• General Lab Use - Supports the clarification of diverse solvent-based and process liquid streams, providing a reliable and cost-effective solution.
• Mineral Acid Compatibility - Withstands concentrated hydrochloric acid and strong caustic bases in aqueous inorganic extraction workflows.
• Viscous Sample Prefilter - Handles heavy particulate loads with ease, acting as a dependable prefilter for viscous or dirty lab liquid samples.