Pura Disc 25mm Nylon Syringe Filters, 0.2um, 200 Pk
Whatman SKU: 6751-2502

Whatman Puradisc Nylon Syringe Filters, 0.2 µm, 25 mm, 200/Pk - 6751-2502

Whatman maintains in-house specialists who set and verify material specifications separately for its cellulose, glass-fiber, and polymer membrane chemistries, tailoring quality control to how each one behaves in use. A sterilizing-grade syringe filter delivers point-of-use sterile filtration in a single-use format, without the housing and gasket maintenance a reusable stainless steel filter holder requires. Naturally hydrophilic nylon accepts water-based samples without surfactant preconditioning and ships in economical bulk non-sterile packaging. Polyolefin construction sheds virtually no extractable material into the sample and maintains a low-dead-volume internal flow path. Where bacterial contamination must stay out of the sample, manufacturer-tested retention keeps the instrument and downstream assay protected without a housing to maintain or clean.

Membrane Characteristics

• Synthetic polyamide backbone resists microbial and enzymatic degradation unlike cellulose membranes
• DMSO compatibility extends across sample-preparation chemistries
• Non-fibrous membrane structure resists media shedding into the filtrate
• Saturation moisture uptake reaches up to 8% by resin weight
• Common ketone solvents, including acetone, methyl ethyl ketone, and methyl isobutyl ketone, cause no attack

Housing Characteristics

• Impact-tolerant polypropylene body withstands routine bench handling without damage
• Optimized internal geometry minimizes backpressure in service
• Minimal ionic background from the polypropylene housing supports ion chromatography and trace-metal ICP-MS sample preparation.
• Minimal intrinsic autofluorescence from the polypropylene housing supports background-sensitive fluorescence-based assay work downstream.

A clean particulate separation keeps your aqueous sample preparation dependable. General-purpose aqueous filtration supports the sample types you handle every day from reagent and buffer preparation through routine sample clarification. Ask our friendly customer service team to confirm the pore size, membrane, and sterility options your filtration application calls for.

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

Bubble Point (psi)

2.9 bar (42 psi)

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

25mm

Filtration Area

4.2cm²

Holdup Volume

<100µl

Material

Nylon

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

200

Pore Size (µm)

0.2

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophilic

• Biofuel Particulate Testing - Removes particulate debris from biodiesel and fuel samples ahead of chromatographic QC analysis in fuel testing labs.
• UHPLC Sample Prep - Removes sub-micron debris from aqueous samples before injection, protecting narrow-bore UHPLC columns from accelerated wear.
• HPLC Pump Protection - Filters reservoir solvent to prevent particulates from abrading pump check valves and seals over time.
• Small-Volume Sterile Prep - Cold-sterilizes small-volume aqueous reagents within a compact blister-pack format for safe, convenient benchtop use.
• Mining Process Waters - Clarifies process water samples from hydrometallurgical operations, removing solids ahead of ICP-MS trace metal quantitation.
• Forensic Toxicology Screening - Clarifies urine and blood extracts ahead of LC-MS or GC-MS analysis in forensic drug-screening laboratories.