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Industrial Filtration Products

MK CF68 Series Capsule Fiter

MK CF68 series capsule filters are ready-to-use units for critical small-volume flows of gases and liquids in industrial and laboratory settings. Available in multiple connection types, filter media, and pore sizes, they support a range of applications from ink and chemical solutions to biological and pure water filtration. Each unit undergoes a 100% pass integrity test and is double-sealed to prevent contamination.

Thermal welding ensures no adhesive in the flow path, reducing extractables and contamination risk
Wide range of filter media including PP, Nylon, PES, PTFE, PVDF for diverse chemical and biological compatibility
Multiple connection options: hose barb, NPT, quick coupling, and M10 lock for flexible integration
Effective filtration area exceeds 1200 cm² for 2.5" length, scaling to 4800 cm² for 10" length

Key Benefits

What This Product Gives You

Thermal welding ensures no adhesive in the flow path, reducing extractables and contamination risk
Wide range of filter media including PP, Nylon, PES, PTFE, PVDF for diverse chemical and biological compatibility
Multiple connection options: hose barb, NPT, quick coupling, and M10 lock for flexible integration
Effective filtration area exceeds 1200 cm² for 2.5" length, scaling to 4800 cm² for 10" length
Operates safely from pH 1 to 13 and up to 85℃ maximum temperature, with a maximum working pressure of 0.50 MPa at 21℃
Double-sealed packaging and clean room manufacturing ensure contamination-free delivery

Housing diameter: Φ68 mm
Filter lengths: 2.5", 5", 10"
Effective filtration area: ≥1200 cm² (2.5"), ≥2400 cm² (5"), ≥4800 cm² (10")
Operating pH range: 1 to 13
Working temperature: ≤65℃
Maximum working temperature: 85℃
Maximum working pressure: 0.50 MPa at 21℃
Forward maximum pressure difference: 0.42 MPa at 21℃
Thermal welded construction with no adhesive in flow path
100% pass integrity test on every unit
Double sealed packaging to prevent contamination

Where It Is Used

Applications And Buyers

Application Scenarios

Filtration of ink in industrial printing systems where particle control is critical
Purification of chemical solutions requiring high compatibility with aggressive solvents
Sterile filtration of biological solutions and culture media in biotechnology processes
Gas filtration in compressed air systems for clean, dry output
Purification of pure water and cleaning fluids in pharmaceutical and food processing

Who It Is For

Industrial filtration engineers managing small-volume, high-purity liquid or gas streams
Biotech and pharmaceutical labs requiring reliable, pre-validated filters for culture media and drug solutions
Chemical processing plants handling corrosive or reactive liquids with strict contamination control
Laboratory distributors sourcing ready-to-use capsule filters with multiple media and connection options
OEMs integrating pre-assembled filters into larger systems without in-house assembly

Problems It Solves

Contamination from adhesive in solvent-bonded filters causing interference in sensitive analytical runs
Inconsistent performance due to poor sealing or material degradation under high temperature or pH extremes
Time lost in assembling filters from separate components, especially in high-throughput environments
Incompatibility with aggressive chemicals leading to housing or membrane failure
Lack of standardisation across multiple filter types when different media and connection styles are required

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 pH	1 to 13
Working Temperature	≤65℃
Maximum Working Temperature	85℃
Maximum Working Pressure	0.50 MPa at 21℃
Forward Maximum Pressure Difference	0.42 MPa at 21℃
Sealing Technology	Thermal welding
Integrity Test	100% pass on every unit
Packaging	Double sealed to prevent contamination

Materials

Filter media: PP, Nylon, PES, PTFE, PVDF

Customization Options

Choice of filter media: PP, Nylon, PES, PTFE, PVDF
Pore sizes: 0.1, 0.22, 0.45, 0.65, 0.8, 1.0, 3.0, 5.0, 10.0, 100.0 micron
Multiple 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, 1/8" male quick coupling, 1/4" male quick coupling
Custom length options: 2.5", 5", 10"
OEM private-label printing and packaging available through the Microlab OEM division

How It Is Made

Manufacturing And Quality Control

Manufacturing Process

Thermal welding of housing and membrane
Assembly of connection fittings (hose barb, NPT, quick coupling, M10 lock)
Integration of selected filter media and pore size
100% integrity testing after assembly
Double-sealed packaging in clean room environment

Quality Control

Visual inspection of housing and sealing before assembly
Integrity test performed on every unit to confirm no leaks
Verification of filter media and pore size against order specification
Check of connection type and length against order code
Final packaging inspection to ensure double-sealed integrity

Comparison

Compared With The Alternatives

Versus Solvent-bonded filters

Thermal welding eliminates adhesive in the flow path, reducing extractables and contamination risk, especially important in sensitive biological or analytical applications.

Versus Multi-piece filter assemblies

The ready-to-use capsule design reduces assembly time and human error, while maintaining consistent sealing and integrity.

Versus Standard filter cartridges

The CF68 series offers a wider range of connection types and media options in a single housing format, simplifying inventory and integration.

Versus Reusable filter housings

Single-use capsule filters eliminate carry-over risk and cleaning validation burden, ideal for sterile or high-purity processes.

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 matrices
Choose pore size according to particle size: 0.1-0.45 micron for sterile or fine particulate removal, 0.65-5.0 micron for general clarification
Match connection type to system fittings: hose barb, NPT, or quick coupling as required
Verify filter length (2.5", 5", 10") to match flow rate and volume requirements
Do not exceed 0.50 MPa at 21℃ or 85℃ maximum temperature; monitor pressure drop during use
Discard after single use to prevent contamination carry-over; store in sealed packaging until use

Photos

Product Gallery

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FAQ

Questions Buyers Ask

What filter media are available in the CF68 series?

Available media include PP, Nylon, PES, PTFE, and PVDF, covering a range of chemical and biological compatibility needs.

What are the available connection types?

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

What is the maximum operating pressure?

Maximum working pressure is 0.50 MPa at 21℃, with a forward maximum pressure difference of 0.42 MPa at 21℃.

Can I use this filter for biological solutions?

Yes. The CF68 series is suitable for biological solutions, culture media, and medicine liquids due to its chemical compatibility and clean construction.

Is the filter suitable for high-temperature applications?

Yes. The filter can withstand a maximum working temperature of 85℃, with a continuous operating limit of 65℃.

Do you offer private-label or OEM options?

Yes. The Microlab OEM division supports private-label printing, packaging, and custom assembly for filter brands and system integrators.