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Thumbnail Filmstrip of Cellulose Acetate Syringe Filters, 0.7/0.45um, 25mm, Luer-Lok/Luer Slip, Nonsterile, 50/Pk Images
Featuring a multilayer construction that stacks graded glass fiber prefilters ahead of a hydrophilic 0.45um cellulose acetate final membrane, these 25mm syringe filters separate sediment and grit from heavily loaded samples in a single pass. The graded 0.7um glass fiber prefilter layers capture coarse particulate before the 0.45um cellulose acetate membrane completes clarification, delivering a clean filtrate without premature clogging. Built into a clear polypropylene housing with Luer-Lok inlet and Luer Slip outlet connections, each device provides a 4.63 cm2 effective filtration area and is supplied nonsterile, 50 per pack.
Key Glass Fiber Media Characteristics
- Graded glass fiber prefilter layers with a 0.7um nominal particle retention manage coarse sediment and grit upstream of the membrane.
- High-loft depth structure provides high particulate loading capacity, ideal for viscous and heavily particulate-laden samples.
- Naturally hydrophilic media supports rapid wet-out and high flow with aqueous samples.
- Reduces clogging so the syringe can be pushed smoothly even with difficult samples, doing the work of multiple standard filters.
Key Cellulose Acetate Membrane Characteristics
- Hydrophilic 0.45um cellulose acetate final membrane provides clarification of aqueous and organic solutions.
- Very low protein binding helps preserve sample integrity and protein recovery.
- Compatible with a wide range of aqueous and alcohol-based solutions.
Key Construction Characteristics
- Clear polypropylene housing with a 30mm housing diameter and ultrasonically sealed construction.
- Luer-Lok inlet and Luer Slip outlet connections for secure, multifunctional attachment.
- Effective filtration area of 4.63 cm2 across the 25mm membrane.
- Maximum operating temperature of 90 degrees C (194 degrees F) and maximum operating pressure of 75 psi.
- Supplied nonsterile in packs of 50.
The combined prefilter and membrane stack delivers consistent, repeatable clarification while protecting downstream instrumentation from particulate fouling. By processing several times more sample volume than a single-layer filter, it maintains flow and sample integrity through challenging, high-solids matrices.
- Color
- Clear
- Connection Type
- Luer-Lok/Luer Slip
- Construction
- Polypropylene housing, ultrasonically welded
- Diameter
- 25mm
- Filtration Area
- 4.63 cm²
- Inlet Connection
- Female Luer Lock
- Material
- Cellulose Acetate (CA) membrane with glass fiber prefilter
- Maximum Operating Pressure
- 75 psi
- Maximum Operating Temperature (°C)
- 90
- Outlet Connection
- Male Luer Slip
- Pack Count
- 50
- Pore Size (µm)
- 0.7/0.45
- Pre-filter Pore Size
- 0.7
- Prefilter (Yes/No)
- Yes
- Prefilter Material
- Glass Fiber
- Sterility
- Nonsterile
- Wettability
- Hydrophilic
- Prefiltration of Heavily Loaded Samples The graded glass fiber layers capture coarse sediment and grit, allowing large-volume or viscous samples to be processed without clogging.
- Sample Clarification The 0.45um cellulose acetate final membrane clarifies aqueous and organic solutions for clean, particle-free filtrate.
- HPLC and GC Sample Prep Removes particulates ahead of chromatographic analysis to protect columns and improve reproducibility.
- Environmental Sample Preparation Handles turbid, particulate-laden environmental matrices that would rapidly foul a single-membrane device.
- Protecting Downstream Membranes Serves as a robust prefiltration stage to extend the life of finer downstream filters and instruments.
- Filtration of Viscous Solutions The no-clog multilayer design enables smooth syringe operation with difficult, high-solids samples.