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Key: test item, instrument name, total nonvolatile migration, gravimeter, moisture permeameter

Product

Oxygen Transmission Rate Analyzer - Coulemeter Sensor method

OTR-E-31-G
Focusing on packaging and material testing technology, we are committed to quality control in industries such as healthcare, pharmaceuticals, food, packaging, textiles, and new materials. Our products are widely used in enterprises, testing institutions, universities, and research institutes.

Category:

Permeation Analyzer

Gas/Oxygen Permeation Analyzer

OTR Tester-Coulometric Method

Oxygen Transmission Rate Tester (Coulometric Sensor Method)

High-Precision OTR Analyzer for Food Packaging, Pharmaceutical Packaging and High-Barrier Materials

Product Overview

The LabStone OTR-E-31-G Oxygen Transmission Rate Tester is a high-performance oxygen barrier analysis system designed for measuring oxygen transmission properties of packaging materials, films, sheets, containers and functional barrier structures.

Based on the internationally recognized Coulometric Sensor Method, the instrument delivers highly sensitive oxygen transmission measurements with ppb-level oxygen detection capability.

The system is particularly suitable for evaluating oxygen barrier performance of food packaging, pharmaceutical packaging, medical materials and advanced barrier films where oxygen ingress directly affects product shelf life, stability and quality.

Function：

Determining oxygen permeability characteristics of materials and container.

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

Working Principle:

The instrument utilizes the Coulometric Sensor Method in accordance with ASTM D3985 and ISO 15105-2.

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

The opposite side is purged with 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 by the carrier gas to an ultra-sensitive coulometric sensor.

The sensor continuously measures oxygen concentration and automatically calculates:

Oxygen Transmission Rate (OTR)
Oxygen Permeability
Oxygen Barrier Performance

This method provides highly sensitive and accurate oxygen transmission measurements, especially for medium- and high-barrier materials.

Compliant Standards:

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

Key Features

Dedicated Oxygen Barrier Analysis

Unlike general gas permeability instruments, the OTR-E-31-G is specifically optimized for oxygen transmission measurement.

Benefits include:

Higher sensitivity
Faster stabilization
Better repeatability
Improved low OTR performance

Imported Coulometric Oxygen Sensor

Equipped with an original imported sensor capable of:

ppb-level oxygen detection
Excellent long-term stability
High repeatability
Superior low oxygen measurement capability

Ideal for high-barrier packaging materials.

Three Independent Test Cells

The OTR-E-31-G supports:

Three Simultaneous Tests

Increased laboratory productivity
Parallel sample comparison
Improved throughput

particularly useful for QC laboratories and packaging development centers.

Wide Humidity Control Capability

Humidity range: 35% RH∼90% RH

Humidity accuracy: ±2% RH

allowing simulation of real-world storage and transportation environments.

Fog-Free Humidity Generation

The fully automatic humidity control system produces stable humidity conditions without generating liquid droplets that could influence test results.

Precise Temperature Control

Temperature range:15°C∼45°C

Temperature accuracy:±0.3°C

supporting a wide range of packaging evaluation studies.

Pneumatic Sample Clamping

Features:

Fast specimen installation
Consistent sealing force
Reduced operator variability

improving testing repeatability.

Container Testing Capability

Optional accessories allow testing of:

Bottles
Cups
Pouches
Finished packages

making the system suitable for both material and package-level oxygen transmission testing.

GMP Data Integrity Support

Optional GMP Computerized System module provides:

User management
Permission management
Audit trail functionality
Electronic records

supporting pharmaceutical compliance requirements.

Industries Served

The OTR-E-31-G is widely used by:

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

Specification

Name	Parameter	Name	Parameter
Humidity Range	0% RH, 35%~90%RH，	Humidity Error	±2%RH
Temperature Range	15℃～45℃	Temperature Error	±0.3℃
Specimen Thickness	<3 mm	Gas pressure	≥0.2 MPa
Carrier gas	99.999% purity nitrogen	Carrier gas flow	0~50 cm³/min；or 0~300cm³/min
Interface size	1/8-inch mental pipe
Power Supply	AC220V /110V ;50/60Hz	Power consumption	＜1500 W
Model special	Model
Model special	OTR-E-31-G
Specimen Count	3
Test Area	38.48 cm²
Film Measure Range	0.01~10,000 cm³/m².24h
Film Measure Error	0.01 cm³/m².24h
Package Measure Range	0.00005~50 cm³/pkg.24h
Package Measure Error	0.00005 cm³/pkg.24h
Net Weight	83 kgs
Size	520×778×475mm (LxBxH)

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.

Why Oxygen Barrier Testing Matters

Among all gases affecting packaged products, oxygen is often the most critical factor influencing product deterioration.

Oxygen ingress can lead to:

Food Packaging

Oxidation
Flavor loss
Nutrient degradation
Color changes
Reduced shelf life

Pharmaceutical Packaging

Active ingredient degradation
Reduced drug efficacy
Stability failures

Medical Packaging

Product performance changes
Sterility risks

Electronics and Specialty Materials

Oxidation-sensitive component damage
Material aging

Therefore, oxygen transmission testing has become one of the most important quality control and package development tools in modern packaging industries.

Typical Applications

Food Packaging Industry

Suitable for:

Snack packaging
Coffee packaging
Dairy packaging
Meat packaging
Modified atmosphere packaging (MAP)
Vacuum packaging

Used for shelf-life prediction and packaging optimization.

Pharmaceutical Packaging Industry

Applicable to:

Blister packaging
Pharmaceutical laminates
Medical pouches
Drug packaging films

Supports packaging validation and stability studies.

Flexible Packaging Materials

Suitable for:

PET films
EVOH structures
PVDC films
Aluminum-coated films
Multi-layer barrier laminates

Medical Packaging

Used for evaluating oxygen barrier performance of sterile barrier systems and healthcare packaging materials.

Research Institutes and Universities

Widely used for:

Barrier material development
Oxygen diffusion studies
Packaging research
New material evaluation

Why Choose a Coulometric OTR Tester Instead of a Differential Pressure Tester?

Coulometric oxygen testing provides:

Higher Oxygen Sensitivity

Specifically optimized for oxygen transmission analysis.

Better Performance for High-Barrier Packaging

Particularly suitable for:

EVOH films
PVDC films
Pharmaceutical laminates
MAP packaging materials

Direct Oxygen Measurement

Measures oxygen concentration directly rather than indirectly through pressure changes.

Frequently Asked Questions (FAQ)

What is OTR?

OTR stands for Oxygen Transmission Rate, which measures the amount of oxygen passing through a material over a specified period.

Why is oxygen transmission important?

Oxygen exposure directly affects product shelf life, freshness, stability and quality.

What is the advantage of the coulometric method?

The coulometric method directly detects oxygen molecules and offers excellent sensitivity for oxygen barrier evaluation.

Can packaging containers be tested?

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

Can pharmaceutical packaging materials be tested?

Yes. The instrument is widely used in pharmaceutical packaging development and validation.

Can humidity-controlled testing be performed?

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

What types of materials can be tested?

Plastic films
Barrier laminates
Medical packaging
Pharmaceutical packaging
Containers
Metal foil composites
Functional films

Does this product have other names?

English

Oxygen Transmission Rate Tester
OTR Tester
Oxygen Permeability Tester
Oxygen Barrier Analyzer
Coulometric Oxygen Transmission Tester
Oxygen Permeation Analyzer
Food Packaging OTR Tester
Pharmaceutical Packaging OTR Tester

Spanish

Analizador de Tasa de Transmisión de Oxígeno

Portuguese

Testador de Taxa de Transmissão de Oxigênio

French

Analyseur de Taux de Transmission de l’Oxygène

German

Sauerstoffdurchlässigkeitsprüfgerät

Japanese

酸素透過率試験機

Function：
Determining oxygen permeability characteristics of materials and container.
Suitable for: Film, sheet, container and construction material of plastic, textile, leather and metal.
Principle:
Coulemeter Sensor method。
Dry oxygen（or with a certain humidity）flows on one side of the specimen, and high-purity nitrogen (carrier gas) flows at a fixed flow rate on the other side; The oxygen concentration difference between the two sides of the specimen drives the oxygen to penetrate from the oxygen side of the specimen to the nitrogen side; The permeated oxygen is carried to the coulometer sensor by nitrogen (carrier gas); The sensor measures the oxygen content of carrier gas and calculates the oxygen permeability of the specimen.
Standards:
YBB 00082003、GB/T 19789、ASTM D3985、ASTM F2622、ASTM F1307、ASTM F1927、ISO 15105-2、JIS K7126-B
Characteristics:
- Original imported oxygen sensor, ppb accuracy.
- 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-test to avoid test under fault state; one key start, fully automatic test execution.
- Software: graphical, whole process and all element monitoring; multiple report formats.
- Optional: software module of GMP computerization system.

Specification

Name	Parameter	Name	Parameter
Humidity Range	0% RH，35%~90%RH，	Humidity Error	±2%RH
Temperature Range	15℃～45℃	Temperature Error	±0.3℃
Specimen Thickness	<3 mm	Gas pressure	≥0.2 MPa
Carrier gas	99.999% purity nitrogen	Carrier gas flow	0~50 cm³/min；or 0~300cm³/min
Interface size	1/8-inch mental pipe
Power Supply	AC220V /110V ;50/60Hz	Power consumption	＜1500 W
Model special	Model
Model special	OTR-E-41-G
Specimen Count	3
Test Area(cm2)	38.48
Film Measure Range （cm3/m2.24h）	0.01~10,000
Film Measure Error （cm3/m2.24h）	0.01
Package Measure Range （cm3/pkg.24h）	0.00005~50
Package Measure Error (cm3/m2.24h)	0.00005
Net Weight (kg)	83
Size(LxBxH)mm	520×778×475

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.

Keywords:

Water Vapor Transmission Rate Analyzer - Cup Method

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