WVTR Permeability Tester - Electrolytic Method

W-E-11-G

Water Vapor Transmission Rate Tester

Single-Cell Electrolytic WVTR Analyzer for Research and Material Development

Designed for R&D Laboratories, Universities and New Material Innovation

The LabStone W-E-11-G Water Vapor Transmission Rate Tester is a precision single-cell WVTR testing system designed for laboratories requiring highly accurate moisture barrier analysis during material development, formulation optimization and packaging research.

Based on advanced electrolytic sensor technology, the instrument provides reliable water vapor transmission measurements for films, sheets, containers and barrier materials while maintaining excellent repeatability and low operating costs.

Overview

Developing high-performance barrier materials requires precise understanding of moisture transmission behavior.

Whether designing:

• pharmaceutical packaging
• food packaging
• biodegradable materials
• electronic barrier films
• construction membranes

researchers must accurately evaluate water vapor permeability before products enter commercial production.

The W-E-11-G provides a dedicated single-test-cell platform optimized for material evaluation, laboratory research and prototype verification.

It is particularly suitable for organizations focused on:

• new material development
• packaging innovation
• barrier structure optimization
• academic research
• formulation comparison

where testing flexibility is often more important than high throughput.

Function：

Determining water vapor permeability characteristics of materials and container.

Suitable for: Film, sheet, container and construction material of plastic, textile, leather and metal.

Principle:

The W-E-11-G utilizes the Electrolytic Detection Sensor Method.

A controlled humidity environment is established on one side of the specimen while dry carrier gas flows across the opposite side.

Water vapor permeating through the material is transported into the electrolytic sensor chamber.

The sensor directly converts transmitted moisture into measurable electrical signals, allowing highly accurate determination of:

• Water Vapor Transmission Rate (WVTR)
• Water Vapor Permeability
• Moisture Barrier Performance

The absolute measurement principle eliminates uncertainty associated with indirect humidity calculations.

Compliance Standards:

The instrument complies with internationally recognized standards:

International Standards

• ISO 15106-3
• ASTM F3299
• JIS K7129
• DIN 53122-2

China Standards

• GB/T 21529
• Current YBB pharmaceutical packaging requirements
  
  
  

Key Features

Dedicated Single-Test Cell Design

Designed specifically for laboratories that prioritize:

• testing flexibility
• material screening
• research accuracy

over high-volume routine testing.

High-Sensitivity Electrolytic Sensor

Features:

• absolute moisture measurement
• low detection limits
• stable repeatability
• excellent long-term reliability

Advanced Environmental Simulation

Supports:

• 35%–90% RH humidity control
• 15–45°C temperature control

allowing simulation of real storage and transportation conditions.

Precision Sample Sealing Technology

H-type pneumatic clamping ensures:

• reliable sealing
• easy operation
• reduced leakage risk

critical for low WVTR measurements.

Fully Automated Operation

Functions include:

• automatic startup diagnostics
• one-click testing
• automatic calculations
• unattended operation
   

Characteristics:

• Electrolytic detection sensor, absolute Coulometric sensor
• Ultra high precision, while relative error is stable.
• Humidity control ability: 35%~90%RH, fully automatic, fogless.
• Temperature control feature: Semiconductor cold and hot bidirectional control, High precision, stable and reliable.
• Strong environmental adaptability: Indoor environment, temperature 10 ~ 30 ℃, any humidity, low cost of use.
• Sample installation: Pneumatic clamp sample (H-type). Sample anti leakage sealing installation technology.
• Intelligent and automatic: power-on self-check to avoid test under fault state; one click start, fully automatic testing.
• Software: graphical, whole process and all element monitoring; multiple report formats.
• Optional: software module of GMP computerized system.
   

Industries Served

The W-E-11-G is widely used by:

• Universities
• Research Institutes
• Material Development Centers
• Pharmaceutical R&D Laboratories
• Packaging Innovation Teams
• Barrier Film Manufacturers
• Electronics Material Developers
• Sustainable Packaging Companies

Specification:

Remark:    Notice: Measure Error to 0.0001g/m2.24h is optional.

System Configuration: 

Mainframe, testing computer, professional testing software, water trap, sampler, nitrogen cylinder pressure reducing valve, sealing grease. 

Optional: GMP computerized system function module, container test component, container temperature control test component, specimen MASK (7cm²/1cm²）.

Self-Supply: High purity nitrogen, distilled water.

Why Researchers Need Accurate WVTR Data

Many material failures originate from uncontrolled moisture transmission.

Examples include:

Pharmaceutical Industry

Moisture ingress may cause:

• API degradation
• reduced drug stability
• shortened shelf life

Food Packaging Industry

Excess moisture transfer may result in:

• texture deterioration
• flavor loss
• microbial growth

Electronics Industry

Water vapor penetration can lead to:

• corrosion
• delamination
• reduced electronic performance

Sustainable Packaging

Biodegradable materials often exhibit significantly different moisture barrier properties compared with traditional plastics.

Accurate WVTR data helps developers optimize formulations and packaging structures.

Application Areas

New Material Development

Suitable for evaluating:

• biodegradable films
• compostable packaging
• nanocomposite materials
• bio-based polymers
• functional coatings

University Research

Ideal for:

• permeability studies
• material science research
• barrier mechanism investigations
• academic projects

Packaging Design Laboratories

Used for:

• package structure comparison
• multilayer film development
• shelf-life prediction studies

Pharmaceutical Packaging Research

Supports development of:

• blister packaging
• sachets
• pouches
• medical packaging films

Functional Film Industry

Applicable for:

• OLED barrier films
• flexible electronics
• lithium battery packaging
• specialty membrane materials
   

Why Choose a Single-Cell WVTR Tester?

Many laboratories do not require multi-cell production testing.

Instead, they need:

• maximum measurement confidence
• flexibility for changing projects
• cost-effective operation
• easy method development

A single-cell WVTR tester is often the preferred solution for research-focused environments.

Frequently Asked Questions (FAQ)

What is the primary advantage of a single-cell WVTR tester?

Single-cell systems are ideal for material development, research projects and low-volume testing where flexibility is more important than throughput.

Is this instrument suitable for pharmaceutical packaging research?

Yes. It is widely used for moisture barrier evaluation of pharmaceutical packaging materials and stability studies.

Can it test biodegradable packaging materials?

Yes. It is especially useful for evaluating compostable films, bio-based materials and sustainable packaging structures.

What is the lowest detectable WVTR value?

The standard system provides excellent sensitivity, while optional configurations can achieve even lower detection limits.

Why is moisture barrier testing important for packaging design?

Moisture transmission directly influences product shelf life, quality retention and packaging performance.

Can the instrument test containers?

Yes. Optional container testing accessories are available.

Is temperature and humidity automatically controlled?

Yes. Both parameters are automatically regulated throughout the test.

What carrier gas is required?

99.999% high-purity nitrogen is recommended.

Does this product have other names?

Common industry names include:

English

• Water Vapor Transmission Rate Tester
• WVTR Tester
• Water Vapor Permeability Tester
• Electrolytic WVTR Analyzer
• Moisture Barrier Tester
• Water Vapor Permeation Tester

German

• Wasserdampfdurchlässigkeitsprüfer

French

• Analyseur de Transmission de Vapeur d’Eau

Spanish

• Analizador de Permeabilidad al Vapor de Agua

Portuguese

• Testador de Permeabilidade ao Vapor de Água

Japanese

• 水蒸気透過率試験機