Syringe Filter

Easyfil Syringe Filter

Easyfil™ Syringe Filter is designed for routine sample clean-up in HPLC, GC and UV analysis. The injection-moulded sealing and single-layer membrane construction reduce extractables, helping maintain clean gradient HPLC baselines. Colour-coded printing on each housing allows immediate identification of membrane type and pore size at the bench without referencing labels.

One product family covers nine membranes, enabling standardisation across aqueous, organic and protein-bearing samples
Single-layer membrane construction minimises dissolution, reducing ghost peaks in gradient HPLC runs
Injection-moulded sealing withstands 6 bar at 23 C, preventing housing failure during high-pressure or viscous sample filtration
Colour coding with printed identification enables quick verification of membrane type and pore size at the bench

Key Benefits

What This Product Gives You

One product family covers nine membranes, enabling standardisation across aqueous, organic and protein-bearing samples
Single-layer membrane construction minimises dissolution, reducing ghost peaks in gradient HPLC runs
Injection-moulded sealing withstands 6 bar at 23 C, preventing housing failure during high-pressure or viscous sample filtration
Colour coding with printed identification enables quick verification of membrane type and pore size at the bench
Designed as a drop-in replacement for Agilent ValueLab syringe filters, allowing method continuity without revalidation

Nine membrane options: Nylon, hydrophobic PTFE, hydrophilic PTFE, MCE, RC, CA, PES, hydrophobic PVDF, hydrophilic PVDF
Pore sizes from 0.1 to 5.0 micron
Effective filtration area of 1.09 cm² at 13 mm and 2.98 cm² at 25 mm
Female luer lock inlet and male luer slip outlet for standard syringe compatibility
Maximum operating pressure of 6 bar at 23 C

Where It Is Used

Applications And Buyers

Application Scenarios

Filtering mobile phases and standards before HPLC and UHPLC injection
Removing particulates from dissolution samples in pharmaceutical QC
Clarifying environmental water samples before ion chromatography
Preparing beverage, juice and edible-oil samples for residue analysis
Filtering cell culture supernatant and buffers in life-science laboratories

Who It Is For

Pharmaceutical QC laboratories running high injection counts where consumable cost per sample matters
Environmental and food testing laboratories that handle mixed aqueous and solvent matrices in the same shift
Contract research organisations standardising consumables across several instruments
Laboratory distributors who need a full membrane range from one supplier and one packing format

Problems It Solves

Column frits blocking early due to unfiltered particulates in sample streams
Extractables from multi-layer or solvent-bonded filters appearing as ghost peaks in gradient HPLC runs
Filters bursting mid-injection when a sample is more viscous than expected
Analysts selecting the wrong pore size because housings lack clear markings
Sourcing nine different membrane types from multiple vendors with inconsistent housings and validation histories

Data

Specifications

Filter Media	Nylon, PTFE, Hydrophilic PTFE, MCE, RC, CA, PES, PVDF, Hydrophilic PVDF
Housing	PP
Diameter	13 mm, 25 mm
Filtration Area	1.09 cm² (13 mm), 2.98 cm² (25 mm)
Pore Size	0.1, 0.22, 0.45, 1.0, 3.0, 5.0 micron
Sealing Technology	Injection molding
Max Operating Pressure	6 bar at 23 C
Inlet / Outlet	Female inlet lock / male outlet slip
Packing	100 pcs per pack

Materials

Membrane selected per application: Nylon, PTFE, MCE, RC, CA, PES, PVDF or PP

Customization Options

Choice of nine membranes across 0.1 to 5.0 micron pore sizes
13 mm and 25 mm housing diameters
OEM printing and private-label packing through the Microlab OEM division
OEM contract manufacturing and membrane die-cut and packing for filter brands

How It Is Made

Manufacturing And Quality Control

Manufacturing Process

Membrane die cutting
Injection moulding of the housing
Injection-moulded sealing of membrane into housing
Colour coding and part number printing
Packing at 100 pieces per pack

Quality Control

Membrane and housing inspected before assembly
Sealing integrity checked against the 6 bar at 23 C operating limit
Pore size and membrane type verified against the printed part number

Comparison

Compared With The Alternatives

Versus Multi-layer syringe filters

The single-layer membrane keeps dissolution low, which matters when a gradient HPLC method is sensitive to extractables. Multi-layer builds add a prefilter for dirty samples but bring more contact material into the flow path.

Versus Solvent-bonded housings

Injection-moulded sealing avoids the adhesive that solvent bonding leaves in the flow path and holds a 6 bar operating pressure.

Versus Agilent ValueLab syringe filters

Easyfil is specified as a replacement for the Agilent ValueLab range, so the same membranes and diameters are available without changing filter geometry.

Versus Reusable filter holders

A reusable holder lowers consumable cost on large volumes but requires cleaning between samples and carries a carry-over risk that a single-use filter does not.

Use Guide

How To Use It

Choose the membrane by sample chemistry: PTFE and PP for aggressive solvents, PES and MCE for aqueous samples, Nylon and RC for mixed mobile phases
Choose 13 mm for sample volumes up to a few millilitres and 25 mm when the volume or particle load is higher
Use 0.45 micron for routine HPLC clean-up and 0.22 micron where finer particulates or sterile-grade clarification is required
Attach the syringe to the female luer lock inlet, expel air, then filter at a steady rate
Discard the first drops if the method is sensitive to the membrane wetting solvent
Do not exceed 6 bar at 23 C; if pressure rises sharply, change to a larger diameter or a coarser pore size

FAQ

Questions Buyers Ask

Which membrane should I use for HPLC mobile phase filtration?

For aqueous mobile phases PES or MCE at 0.45 micron is the usual choice. For organic mobile phases and aggressive solvents use PTFE or PP. RC and Nylon work across mixed aqueous and organic phases.

What is the difference between the 13 mm and 25 mm sizes?

The 13 mm filter has a 1.09 cm² filtration area and suits small sample volumes. The 25 mm filter has 2.98 cm² and handles larger volumes or heavier particle loads before it blocks.

What pressure can the filter take?

Maximum operating pressure is 6 bar at 23 C. The housing is sealed by injection moulding rather than solvent bonding, which is what allows that rating.

Can Easyfil replace our current Agilent ValueLab filters?

Yes. Easyfil is specified as a replacement for the Agilent ValueLab syringe filter range in the same 13 mm and 25 mm diameters.

How are the filters packed?

Standard packing is 100 pieces per pack. Each housing carries colour coding and a printed part number so membrane type and pore size can be confirmed at the bench.

Do you supply these under our own brand?

Yes. The Microlab OEM division covers OEM plastic devices, OEM contract manufacturing, and membrane die-cut and packing, so private-label printing and packing can be arranged.