Industrial Filtration Products

Capsule Filters

Capsule Filters are ready-to-use units for critical applications involving small volume flows of gases and liquids. Available in multiple filter media and pore sizes, they support a wide range of industrial and laboratory processes. The filters are manufactured in a clean room environment and delivered in double-sealed packaging to prevent contamination.

Thermal welding of the housing ensures no adhesive is present in the flow path, reducing extractables
Available in multiple filter media and pore sizes to match sample chemistry and filtration needs
High temperature resistance up to 85℃ and operating pH range of 1 to 13 for broad chemical compatibility
Effective filtration area exceeds 1200 cm² for 2.5" length, scaling to over 4800 cm² for 10" length

Key Benefits

What This Product Gives You

Thermal welding of the housing ensures no adhesive is present in the flow path, reducing extractables
Available in multiple filter media and pore sizes to match sample chemistry and filtration needs
High temperature resistance up to 85℃ and operating pH range of 1 to 13 for broad chemical compatibility
Effective filtration area exceeds 1200 cm² for 2.5" length, scaling to over 4800 cm² for 10" length
Multiple connection types including hose barbs, NPT, and quick couplings for flexible system integration

Housing diameter of Φ68 mm with lengths of 2.5", 5", and 10"
Effective filtration area ≥1200 cm² for 2.5", ≥2400 cm² for 5", ≥4800 cm² for 10"
Operating temperature up to 65℃, maximum temperature 85℃
Working pressure ≤0.1 MPa, maximum working pressure 0.50 MPa at 21℃
Forward maximum pressure difference 0.42 MPa at 21℃
pH range 1 to 13 for broad chemical compatibility
Thermal welded construction with no adhesive in the flow path
Double sealed packaging to prevent contamination during storage and transport

Where It Is Used

Applications And Buyers

Application Scenarios

Filtration of biological solutions and culture media in biopharmaceutical processes
Purification of chemical solutions requiring high resistance to aggressive solvents
Gas filtration in industrial systems where particulate removal is critical
Sterile filtration of pure water and cleaning solutions in clean-in-place (CIP) systems
Filtration of corrosive liquids where material integrity and chemical resistance are essential

Who It Is For

Pharmaceutical and biotechnology labs requiring sterile and low-extractable filtration
Industrial process engineers managing small-volume liquid or gas streams
Environmental testing labs handling corrosive or high-pH samples
Food and beverage manufacturers needing consistent filtration for process fluids
Lab distributors sourcing ready-to-use filtration units with multiple configuration options

Problems It Solves

Contamination from adhesive in solvent-bonded housings during sensitive filtration runs
Filter failure due to poor chemical resistance in low-grade plastic housings
Inconsistent performance when using filters with unverified integrity or sealing
Downtime from incompatible connection types during system integration
Loss of sample integrity due to low effective filtration area in small-format filters

Data

Specifications

Housing Diameter	Φ68 mm
Filter Length	2.5", 5", 10"
Effective Filtration Area	≥1200 cm² (2.5"), ≥2400 cm² (5"), ≥4800 cm² (10")
Operating Temperature	≤65℃
Maximum Working Temperature	85℃
Maximum Working Pressure	0.50 MPa at 21℃
Forward Maximum Pressure Difference	0.42 MPa at 21℃
pH Range	1 to 13
Sealing Technology	Thermal welding
Connection Types	1/8" hose barb, 1/4" hose barb, 3/8" hose barb, 1/2" hose barb, 1/8" NPT, 1/4" NPT, 1/2" NPT, male quick coupling
Filter Media	PP, Nylon, PES, PTFE, PVDF, Hydrophilic PVDF, Hydrophilic PTFE, Hydrophobic PVDF, Hydrophobic PTFE
Pore Size	0.1, 0.22, 0.45, 0.65, 0.8, 1.0, 3.0, 5.0 micron
Packaging	Double sealed packaging

Materials

Filter media selected per application: PP, Nylon, PES, PTFE, PVDF, Hydrophilic PVDF, Hydrophilic PTFE, Hydrophobic PVDF, Hydrophobic PTFE

Customization Options

Choice of multiple filter media and pore sizes for specific application needs
Multiple inlet/outlet connection types including hose barbs, NPT, and quick couplings
OEM private-label printing and packaging available through the Microlab OEM division
Custom length options and configuration codes based on customer requirements

How It Is Made

Manufacturing And Quality Control

Manufacturing Process

Thermal welding of the housing and membrane assembly
Membrane die-cutting to precise dimensions
Assembly of filter media into housing with thermal weld seal
Double sealed packaging to prevent contamination
Final inspection and integrity testing

Quality Control

Visual inspection of housing and membrane before assembly
Integrity testing of each unit to ensure 100% pass rate
Verification of connection type, length, and media against order specification
Confirmation of thermal weld strength and seal integrity under pressure

Comparison

Compared With The Alternatives

Versus Solvent-bonded capsule filters

Thermal welding eliminates adhesive in the flow path, reducing extractables and improving chemical compatibility

Versus Standard plastic housings without thermal welding

Thermal welding provides a stronger, more consistent seal under pressure and temperature variations

Versus Single connection type filters

Multiple connection options allow integration into diverse system designs without adapters

Versus Reusable filter housings

Single-use capsule filters eliminate carry-over risk and cleaning validation burden in regulated environments

Use Guide

How To Use It

Select filter media based on sample chemistry: PTFE and PVDF for aggressive solvents, PES and PP for aqueous solutions, Nylon for mixed phases
Choose pore size based on particle size: 0.1-0.22 micron for sterile filtration, 0.45-1.0 micron for general clarification
Match filter length to flow rate and volume: 2.5" for low flow, 10" for high volume or high particle load
Ensure connection type matches system fittings (hose barb, NPT, quick coupling)
Do not exceed 0.50 MPa maximum working pressure or 85℃ maximum temperature
Discard after use to prevent cross-contamination; do not reuse

Also In This Category

Related Industries And Guides

Industrial Cartridge and Capsule Filter Guide

FAQ

Questions Buyers Ask

What filter media are available for capsule filters?

Available media include PP, Nylon, PES, PTFE, PVDF, Hydrophilic PVDF, Hydrophilic PTFE, Hydrophobic PVDF, and Hydrophobic PTFE.

What is the maximum operating temperature?

Maximum working temperature is 85℃, with continuous operation up to 65℃.

Can I use this filter for sterile filtration?

Yes, with pore sizes of 0.1, 0.22, or 0.45 micron, and proper validation, these filters can support sterile filtration applications.

What connection types are available?

Available connection types include 1/8", 1/4", 3/8", and 1/2" hose barbs, 1/8", 1/4", and 1/2" NPT, and male quick couplings.

How are the filters packaged?

Each filter is delivered in double-sealed packaging to prevent contamination during storage and transport.

Do you offer private-label or OEM options?

Yes. The Microlab OEM division supports private-label printing, custom packaging, and contract manufacturing for filter brands.