EVOH Capillary Tube

Description

Product Description

EVOH Capillary Tube is a high-performance microtube made of Ethylene Vinyl Alcohol , with fine inner diameter and precise structure. Its multi-layer co-extruded design ensures high gas barrier performance, reduces humidity impact, and provides mechanical strength. Smooth inner walls minimize adhesion, suitable for conveying micro volumes of liquids, gases, reagents, or pharmaceuticals in medical, IVD, and analytical applications.

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Product information

Product Name	EVOH Capillary Tube
Product Type	EVOH
Colour	Transparent / Translucent / Customisable
Inner diameter range	0.5–2.0 mm(Customisation available)
Outer diameter / Wall thickness	Customisable
Applicable medium	Air, gases, liquids, reagents, medicinal solutions
Temperature range	-40°C ~ +80°C (depending on the structure)

Product characterization And Application

Feature

Exceptional Oxygen Barrier

1.EVOH inherently provides extremely high oxygen barrier, thousands of times higher than ordinary PE

2.Effectively prevents oxygen, CO₂, and odors from entering the tubing, ensuring media purity

Chemical Inertness and Resistance

1.EVOH Tube Resistant to oils, fatty hydrocarbons, and most organic solvents

2.Non-toxic and tasteless, compliant with food contact and medical standards

Excellent Mechanical Properties

1.High strength and puncture resistance

2.Micro-diameter structure provides flexibility for tight bends and precise routing

Microchannel Characteristics

1.Fine inner diameter (0.5–2.0 mm)

2.Smooth inner wall, low adhesion, and resistant to clogging

Multi-layer Composite Structure

1.EVOH as the core barrier layer, inner and outer PE/PP layers for moisture protection

2.Combines barrier performance, moisture resistance, mechanical strength, and processability

High Transparency and Visual Monitoring

1..Transparent structure allows easy observation of internal fluid flow

Applications

Laboratory and Analytical Instruments

1.Microfluidic channels in HPLC (High Performance Liquid Chromatography) and GC (Gas Chromatography)

2.Conveying micro-volumes of reagents or high-purity liquids

3.Microfluidic chip tubing

Food and Smart Preservation

1.Precision injection of inert gases (e.g., nitrogen)

2.High-end small-scale preservation devices or packaging systems

Industrial and High-end Technology

1.Micro-sleeves for secondary optical fiber coating

2.Microchannel cooling systems for precision electronics or lasers

3.Microfluidic delivery in fuel cells

In addition to standard capillary tubes, we also offer custom tubing solutions, including special-shaped tubes for specific system requirements.