GD/XP Syringe Filter, Nylon Filteration Medium, 0.45um (150 pcs)
Whatman SKU: 6971-2504

Whatman GD/XP Nylon Syringe Filters, 0.45 µm, 25 mm, 150/Pk - 6971-2504

Whatman stages a coarse and a fine polypropylene layer ahead of the rated membrane in the GD/XP cartridge, clearing particulate load before it reaches metals-analysis-grade filtrate. Syringe filters replace the separate holder and vacuum apparatus of bulk filtration with a single disposable unit, eliminating cleaning between samples. Nylon withstands elevated differential pressures while staying stable across pH 3 to 12 and fits routine analytical sample preparation. The polypropylene housing holds its seal true run after run and holds its geometry through sample filtration at temperatures up to 121°C. For routine sample preparation across many methods, each analytical run starts with a consistent, particle-free sample without added hardware or a cleaning step.

Membrane Characteristics

• Resonance-stabilized amide bonds anchor nylon's resistance to alkaline hydrolysis
• Solvent compatibility extends to both acetonitrile and methanol
• Layered prefiltration sustains flow through turbid, particulate-laden samples
• Synthetic polyamide backbone resists microbial and enzymatic degradation unlike cellulose membranes
• Tortuous, reticulated pore structure yields more usable filtration area than capillary-pore membranes

Housing Characteristics

• Burst pressure rating provides a wide safety margin above the rated maximum operating pressure.
• Translucent housing wall allows visual confirmation of sample flow during filtration
• Inert polyolefin wall contributes minimal sample adsorption to the filtrate
• PP housing rated to 121°C holds its geometry through high-temperature sample preparation and processing.

A clean particulate separation keeps your aqueous sample preparation dependable. Consistent aqueous clarification clears particulates without slowing your bench routine the same way every time you run it. Bulk pricing kicks in on larger filtration orders, so ask the Tisch Scientific team for a quote.

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

Bubble Point (psi)

2.0 bar (29 psi)

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

25mm

Filtration Area

4.6cm²

Holdup Volume

1.4ml

Material

Nylon

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

150

Pore Size (µm)

0.45

Prefilter (Yes/No)

Yes

Prefilter Material

Polypropylene (10µm + 5µm)

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophilic

• Mining Process Waters - Clarifies process water samples from hydrometallurgical operations, removing solids ahead of ICP-MS trace metal quantitation.
• Cosmetics Batch Testing - Filters aqueous lotions, serums, and personal care products for particulate QC and potency assay sampling.
• Veterinary Drug Residue Testing - Clarifies meat, milk, and egg extracts ahead of LC-MS/MS screening for drug residues in food-safety laboratories.
• QuEChERS Cleanup - Clarifies acetonitrile food extracts after dispersive cleanup, protecting GC-MS and LC-MS systems during pesticide screening.
• Amino Acid Profiling - Clarifies aqueous sample digests for HPLC and LC-MS amino acid analysis in food, nutrition, and fermentation monitoring.
• Biofuel Particulate Testing - Removes particulate debris from biodiesel and fuel samples ahead of chromatographic QC analysis in fuel testing labs.