OTR-E-41-G

Oxygen Transmission Rate Tester (4-Cell Coulometric Method)

                                High-Throughput Oxygen Barrier Testing System for Quality Control Laboratories

Overview

The LabStone OTR-E-41-G Oxygen Transmission Rate Tester is a high-efficiency four-cell oxygen permeability testing system designed for laboratories that require increased testing throughput, consistent quality control, and reliable oxygen barrier evaluation.

Utilizing the internationally recognized Coulometric Sensor Method, the instrument provides highly accurate oxygen transmission measurements for packaging materials, containers, pharmaceutical packaging, and barrier films.

The four-cell configuration enables simultaneous testing of multiple samples, significantly improving laboratory productivity and reducing testing turnaround time.

The system is widely used for:

• Incoming material inspection
• Production quality control
• Supplier qualification
• Packaging validation
• Barrier material certification

Function：

Determining oxygen permeability characteristics of materials and container.

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

Principle:

The OTR-E-41-G operates according to the Coulometric Sensor Method.

One side of the specimen is exposed to oxygen or a controlled oxygen-humidity atmosphere.

The opposite side is continuously purged using ultra-high purity nitrogen carrier gas.

The oxygen concentration difference across the specimen drives oxygen molecules to permeate through the material.

The permeated oxygen is transported to a highly sensitive coulometric sensor.

The sensor directly measures oxygen concentration and automatically calculates:

• Oxygen Transmission Rate (OTR)
• Oxygen Permeability
• Oxygen Barrier Performance

This direct oxygen measurement method provides excellent accuracy and repeatability for medium- and high-barrier materials.

Standards: 

ASTM D3985, ASTM F1307, ASTM F1927, ASTM F2622, ISO 15105-2, JIS K7126-2, GB/T 19789

Key Features

Four Independent Test Cells

The OTR-E-41-G supports:

Four Simultaneous Tests

Benefits include:

• Higher sample throughput
• Faster reporting
• Reduced laboratory bottlenecks
• Improved productivity

Ideal for routine quality control operations.

Optimized for Comparative Testing

The four-cell design allows:

• Multiple suppliers comparison
• Batch-to-batch evaluation
• Material consistency verification
• Parallel validation testing

making it especially valuable for manufacturing environments.

Imported ppb-Level Coulometric Oxygen Sensor

Features:

• Original imported sensor
• ppb-level oxygen detection
• Excellent repeatability
• Long-term stability

ensuring highly reliable oxygen transmission measurements.

Wide Humidity Simulation Capability

Humidity range:35% RH∼90% RH

Humidity accuracy:±2% RH

Supports realistic storage and transportation condition simulation.

Fog-Free Humidity Control Technology

The humidity generation system produces stable humidity without condensation or liquid water droplets.

Benefits include:

• Improved testing accuracy
• Stable environmental conditions
• Better repeatability

Precision Temperature Control

Temperature range:15°C∼45°C

Temperature accuracy:±0.3°C

allowing simulation of various application environments.

Pneumatic Specimen Clamping System

Advantages include:

• Quick sample installation
• Uniform clamping force
• Reduced operator variation
• Enhanced sealing reliability

particularly important for quality control laboratories handling large numbers of specimens.

Container Oxygen Transmission Testing

Optional accessories support testing of:

• Plastic bottles
• Pharmaceutical containers
• Cups
• Flexible pouches
• Finished packaging

allowing evaluation of both materials and complete packages.

GMP Data Integrity Support

Optional GMP Computerized System software provides:

• User management
• Audit trails
• Electronic records
• Permission management
• Data integrity protection

suitable for pharmaceutical and regulated industries.

Typical Materials Tested

The OTR-E-41-G is suitable for:

Packaging Films

• PE
• PP
• PET
• Nylon
• EVOH
• PVDC

Barrier Structures

• Multilayer laminates
• Coextruded films
• Metallized films
• Coated films

Pharmaceutical Packaging

• Blister films
• Medical pouches
• Drug packaging laminates

Containers

• Plastic bottles
• Cups
• Flexible packages

Specification

Standard Configuration: Main engine, test computer, professional test software, oxygen trap, specimen sampler, 2 pressure reducing valves, sealing grease.

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

Self-Supply: High purity Oxygen, High purity nitrogen, distilled water.

Designed for Quality Control Laboratories

As production volumes increase, laboratories must evaluate multiple samples quickly and consistently.

The OTR-E-41-G was specifically developed to support:

Packaging Manufacturing Quality Control

Routine verification of oxygen barrier properties for production batches.

Pharmaceutical Packaging Inspection

Batch-to-batch consistency evaluation of blister films, pouches and barrier laminates.

Incoming Material Verification

Comparison of materials from multiple suppliers.

Production Process Validation

Monitoring barrier performance before and after manufacturing processes.

Third-Party Testing Laboratories

Improved throughput for contract testing services.

Why Oxygen Barrier Performance Matters

Oxygen ingress is one of the primary causes of product degradation.

Poor oxygen barrier performance may result in:

Food Packaging

• Oxidation
• Flavor deterioration
• Color changes
• Reduced shelf life

Pharmaceutical Packaging

• Drug degradation
• Reduced active ingredient stability
• Regulatory compliance risks

Medical Packaging

• Performance reduction
• Sterility concerns

Consumer Products

• Product aging
• Reduced storage stability

Accurate oxygen transmission testing is therefore essential for package design and quality assurance.

Advantages of Four-Cell Testing

Compared with single-cell instruments, the OTR-E-41-G offers:

Higher Throughput

Test more samples simultaneously.

Improved QC Efficiency

Reduce waiting time for results.

Better Batch Comparison

Compare multiple samples under identical conditions.

Lower Cost Per Test

Increase laboratory productivity without additional manpower.

Industries Served

The OTR-E-41-G is widely used by:

• Food Packaging Manufacturers
• Pharmaceutical Packaging Suppliers
• Beverage Packaging Companies
• Medical Packaging Producers
• Barrier Film Manufacturers
• Quality Control Laboratories
• Third-Party Testing Organizations
• Universities and Research Institutes

Frequently Asked Questions (FAQ)

What is OTR?

OTR (Oxygen Transmission Rate) measures the amount of oxygen passing through a material over a specified time period.

Why choose a four-cell oxygen permeability tester?

A four-cell design significantly increases testing throughput and allows parallel comparison of multiple samples.

Is the instrument suitable for quality control laboratories?

Yes. The OTR-E-41-G is specifically optimized for routine quality control and batch inspection.

Can packaging containers be tested?

Yes. Optional container fixtures support bottles, pouches, cups and finished packages.

Can pharmaceutical packaging materials be tested?

Yes. The system is widely used for pharmaceutical packaging qualification and validation.

What is the advantage of the coulometric sensor method?

The method directly measures oxygen concentration and provides excellent sensitivity for oxygen barrier testing.

Can humidity-controlled testing be performed?

Yes. The system supports fully automatic humidity control from 35% RH to 90% RH.

Does this product have other names?

English

• Oxygen Transmission Rate Tester
• Four-Cell OTR Tester
• Coulometric Oxygen Tester
• Oxygen Permeability Tester
• Coulometric Oxygen Tester
• High Throughput OTR Analyzer
• Oxygen Barrier Analyzer
• Oxygen Barrier Testing Equipment
• Coulometric OTR Analyzer
• Oxygen Permeability Tester
• Packaging Oxygen Barrier Tester
• Packaging Oxygen Transmission Tester
• Pharmaceutical Packaging OTR Tester
• Quality Control OTR Testing System

Spanish

• Analizador de Transmisión de Oxígeno de Cuatro Celdas

Portuguese

• Testador de Transmissão de Oxigênio de Quatro Células

French

• Analyseur de Transmission d’Oxygène à Quatre Cellules

German

• Sauerstoffdurchlässigkeitsprüfgerät mit Vier Prüfkammern

Japanese

• 4チャンネル酸素透過率試験機