GD/X 13mm Syringe Filter, PTFE Filteration Medium, 0.45um (1500 pcs)
Whatman SKU: 6875-1304

Whatman GD/X PTFE Syringe Filters, 0.45 µm, 13 mm, 1500/Pk - 6875-1304

Whatman stages multiple glass fiber layers inside the GD/X cartridge to intercept particles in progressive steps, leaving only the smallest fraction to reach the tightly rated final membrane. A syringe filter dispenses filtrate directly into an autosampler vial, without the intermediate collection vessel a bulk vacuum filtration setup typically needs. PTFE holds consistent absolute retention at the rated pore size while resisting attack from the harshest process chemistries and blocks aqueous ingress in vent applications. The polypropylene housing keeps the sample chemically unaltered across the pass while standing firm against aqueous acids, bases, and alcohols during regular handling and leaves no seam for sample to bypass the membrane. Where bench-scale prep must move quickly from one sample to the next, the syringe filter adds a clarification step without slowing the workflow.

Technical Specifications

• PTFE resists attack from strong oxidizing agents such as nascent chlorine and concentrated sodium hydroxide, supporting filtration of hypochlorite-based disinfectant and cleaning validation samples.
• Hydrophobic PTFE retains its gas-venting, liquid-blocking function through repeated autoclave sterilization cycles.
• PTFE retains flexibility and mechanical toughness from cryogenic temperatures near -268°C up to a continuous service limit of 260°C, spanning frozen sample storage through elevated-temperature method work.
• Low extractables keep the chromatographic background clean
• Stable across a wide operating temperature range for demanding methods

Housing Specifications

• Impact-tolerant polypropylene body withstands routine bench handling without damage
• Burst pressure rating provides a wide safety margin above the rated maximum operating pressure.
• Polypropylene density near 0.90 g/cm3 keeps housing weight low relative to denser engineering plastics
• Withstands ethylene oxide gas sterilization without embrittlement or structural damage.

Filtering aggressive solvents and reagents through a filter that holds up to the chemistry keeps your sample prep reliable. Solvent-stream filtration handles the solvents and reagents your methods rely on so your filter holds its integrity through the run. 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)

0.6 bar (9 psi) [IPA]

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

13mm

Filtration Area

1.3cm²

Holdup Volume

0.5ml

Material

Polytetrafluoroethylene (PTFE)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

150

Pore Size (µm)

0.45

Prefilter (Yes/No)

Yes

Prefilter Material

Glass Microfiber (GMF)

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 10ml

Wettability

Hydrophobic

• Chemical Synthesis - Resists aggressive organic solvents and corrosive acids for compatibility with harsh synthetic reaction mixtures.
• Polymer GPC Prep - Clarifies polymer solutions in THF ahead of gel permeation chromatography, protecting columns from particulates.
• Environmental Prep - Clears heavy particulate loads from solvent-based soil and sediment extracts, pairing a glass prefilter with a PTFE membrane.
• Agrochemical Formulation QC - Clarifies technical pesticide concentrates in organic solvent ahead of HPLC potency and impurity analysis.
• Photoresist Filtration - Clarifies photoresist solutions in organic casting solvent ahead of spin-coating, reducing particulate defect risk.
• Battery Electrolyte Prep - Clarifies lithium-ion battery electrolyte in carbonate solvents ahead of GC-MS purity and impurity analysis.