PEEK Microfluidic Connectors Set
Chemical-resistant PEEK microfluidic connectors in 2-way, 3-way, and 4-way configurations for reliable fluid interconnection up to 260°C.
Louise Corscadden, PhD
Neuroscience · ConductScience
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The PEEK Microfluidic Connectors Set provides versatile fluidic interconnection for microfluidic research applications. Manufactured from polyetheretherketone (PEEK), these connectors offer chemical inertness and thermal stability up to 260°C, making them suitable for demanding analytical conditions. The set includes 2-way, 3-way, and 4-way configurations designed for 1.6 mm outer diameter tubing.
These connectors are compatible with glass, silicon, quartz, PMMA, and organic microfluidic chips, enabling researchers to establish reliable fluid connections across diverse platform materials. The PEEK construction resists most solvents and maintains dimensional stability under temperature cycling, supporting reproducible fluid handling in analytical workflows.
How It Works
PEEK microfluidic connectors function through precision-machined internal channels that create leak-tight seals with inserted tubing. The PEEK polymer structure consists of aromatic rings linked by ether and ketone groups, providing exceptional chemical resistance and mechanical strength. When tubing is inserted into the connector bore, the elasticity of PEEK creates sufficient radial compression to maintain a fluid-tight seal without requiring additional sealing elements.
The multi-way configurations enable flow splitting, mixing, or direction changes within microfluidic networks. Internal channel geometry is designed to minimize dead volume and flow disturbance, preserving sample integrity and maintaining laminar flow characteristics. The 260°C temperature rating reflects PEEK's glass transition temperature, above which the polymer begins to soften but maintains structural integrity for most analytical applications.
Features & Benefits
Configurations
- 2-way, 3-way, 4-way
Max Temperature
- 260 C
Tube OD
- 1.6 mm
Compatibility
- Glass, silicon, quartz, PMMA, organic chips
Automation Level
- manual
Brand
- ConductScience
Material
- PEEK
Research Domain
- Analytical Chemistry
- Environmental Monitoring
- Food Science
- Materials Science
- Microbiology
- Pharmaceutical QC
Weight
- 0.05 kg
Dimensions
- L: 50.0 mm
- W: 30.0 mm
- H: 10.0 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Operating Temperature Range | Up to 260°C maximum temperature | Standard polymer fittings often limited to 80-120°C | Enables high-temperature extraction and thermal gradient applications without connector degradation. |
| Chemical Compatibility | PEEK construction with broad solvent resistance | Basic polymer materials may swell or degrade in organic solvents | Supports diverse analytical methods without material compatibility constraints. |
| Configuration Options | 2-way, 3-way, and 4-way configurations included | Single configuration sets require separate purchases | Provides flexibility for complex fluidic routing without additional component sourcing. |
| Substrate Compatibility | Glass, silicon, quartz, PMMA, and organic chip compatibility | Limited to specific substrate materials | Enables integration across diverse microfluidic platform technologies. |
| Dimensional Specifications | 1.6 mm tubing outer diameter compatibility | Varies by model with different diameter requirements | Matches common microfluidic tubing standards for direct system integration. |
The PEEK Microfluidic Connectors Set provides high-temperature operation up to 260°C with broad chemical compatibility across multiple connector configurations. The inclusion of 2-way, 3-way, and 4-way options supports diverse fluidic routing requirements in analytical and research applications.
Practical Tips
Mark tubing insertion depth with permanent marker before first connection to ensure consistent seating depth in repeated assemblies.
Why: Consistent insertion depth maintains reproducible dead volume and prevents connection variability affecting analytical results.
Rotate tubing position slightly during reassembly to distribute wear across different contact areas of the connector bore.
Why: Even wear distribution extends connector service life and maintains sealing integrity over multiple connection cycles.
If connections leak under pressure, verify tubing OD is within specification using calipers or micrometer measurement.
Why: Tubing dimensional variations outside 1.6 mm OD specification can compromise sealing performance despite proper installation technique.
Use appropriate chemical-resistant gloves when handling solvents during system flushing and cleaning procedures.
Why: PEEK compatibility with aggressive solvents means potentially hazardous chemicals may be used in connected systems.
Purge air bubbles completely from connector internal volumes before sample introduction using gentle pressure and visual inspection.
Why: Trapped air creates flow instability and can cause baseline disturbances in sensitive analytical measurements.
Document flow distribution ratios for multi-way connectors under actual operating conditions rather than assuming theoretical splits.
Why: Manufacturing tolerances and system resistance variations can affect actual flow distribution compared to designed values.
Store assembled connectors with inert solvent fill to prevent internal surface oxidation and contamination buildup.
Why: Dry storage can allow particulate accumulation and surface degradation that impacts subsequent analytical performance.
Replace connectors showing visible scoring or surface damage on internal sealing surfaces to maintain system integrity.
Why: Surface imperfections create leak paths and can trap contaminants affecting sample carryover between analyses.
Setup Guide
What’s in the Box
- 2-way PEEK connector (typical)
- 3-way PEEK connector (typical)
- 4-way PEEK connector (typical)
- Installation instructions (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering defects in materials and workmanship. Technical support includes application guidance and troubleshooting assistance for optimal system integration.
Compliance
What solvents are incompatible with PEEK connector material?
PEEK shows excellent resistance to most organic solvents, acids, and bases. Limited compatibility occurs with concentrated sulfuric acid at elevated temperatures and some halogenated solvents under prolonged exposure. Consult chemical compatibility charts for specific solvent conditions.
How do I prevent leaks at tubing connections?
Ensure tubing ends are cut cleanly with sharp blade, insert fully until seated against internal stop, and verify tubing OD matches 1.6 mm specification. Slight twisting motion during insertion helps achieve proper seating.
Can these connectors be used with pressurized systems?
PEEK connectors can handle moderate pressures typical of microfluidic applications. Maximum pressure depends on tubing fit tolerance and system temperature. Perform leak testing at intended operating pressure before sample introduction.
What is the internal dead volume of each connector type?
Dead volume specifications depend on internal channel geometry and connector configuration. Consult product datasheet for precise volumetric measurements critical to chromatographic applications.
How should connectors be cleaned between different samples?
Flush with appropriate solvent sequence based on sample chemistry - typically methanol or acetonitrile followed by buffer or mobile phase. Multiple volume exchanges ensure complete sample carryover removal.
Are these connectors reusable after disassembly?
PEEK connectors are designed for multiple assembly cycles. Inspect internal surfaces for wear or scoring after disassembly, and replace if sealing surfaces show damage that could compromise leak-tight performance.
What tubing materials work best with PEEK connectors?
PTFE, FEP, and stainless steel tubing with 1.6 mm OD provide optimal sealing. Softer materials like silicone may compress excessively, while harder materials require precise dimensional tolerances for proper fit.
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