Anotop Plus 25mm Syringe Filter w/GMF PreFilter, 0.1um, 50 Pk
Whatman SKU: 6809-4012

Whatman Anotop Aluminum Oxide Syringe Filters, 0.1 µm, 25 mm, 50/Pk - 6809-4012

Whatman's Anotop line separates by physical particle dimension alone, a capability rooted in ceramic media chemistry rather than the organic polymer chemistries used in most other membrane technologies. 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. The alumina membrane achieves bacterial retention at the rated pore size while presenting proteins with a permanently hydrophilic oxide surface and tolerates high temperatures and broad solvent ranges. The polypropylene housing routes flow to minimize backpressure in service while pressing snugly against the membrane during the pass and sheds virtually no extractable material into the sample. 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

• Inorganic ceramic structure resists solvent swelling common to polymer membrane materials
• Chemical stability in aqueous solutions spans a pH 3 to 9 range
• Absolute pore-size rating holds consistent across every protocol
• Uniform capillary pore array gives high pore density without lateral crossover
• Rigid inorganic structure withstands high temperatures with minimal extractables

Housing Characteristics

• Dilute aqueous acids, bases, and alcohols used in sample prep do not degrade the polypropylene housing
• Inert polyolefin wall contributes minimal sample adsorption to the filtrate
• Housing tolerates elevated-temperature aqueous and solvent sample filtration up to about 80°C without softening.
• Standardized luer connection geometry provides secure engagement with standard syringe tips

Clarify your routine aqueous samples in a single pass and cut down on juggling multiple filter types at the bench. General-purpose aqueous filtration supports the sample types you handle every day from reagent and buffer preparation through routine sample clarification. 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)

6.2 bar (90 psi)

Burst Pressure (psi)

100psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Anopore (Aluminum Oxide)

Diameter

25mm

Filtration Area

4.15cm²

Holdup Volume

<150µl

Material

Anopore

Maximum Operating Pressure

100psi

Maximum Operating Temperature (°C)

40°C

Pack Count

50

Pore Size (µm)

0.1

Prefilter (Yes/No)

No

Sterility

Nonsterile

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophilic

• HPLC Solvent Filtration - Filter chromatography mobile phases and solvents reliably, resisting degradation from aggressive organic reagents.
• Wastewater Solids Monitoring - Retains and recovers suspended solids and microbial contaminants from effluent samples for permit limit verification.
• Carbohydrate Prep - Prepare saccharide samples for analysis, ensuring no organic extractables interfere with sensitive carbohydrate detection.
• Drinking Water Compliance - Concentrates microorganisms from potable water samples for enumeration and regulatory-method pathogen detection testing.
• Mycoplasma Removal - Filter tissue culture media reliably, ensuring freedom from Mycoplasma contamination with precise 0.1 µm pore retention.
• Gravimetric Solids Testing - Determine particulate mass accurately, using a non-hygroscopic ceramic that resists moisture-driven drift.