Oxygen Transmission Rate Tester (Single-Cell)
The ToronOTR™ 1 is a high-performance single-cell oxygen transmission rate tester designed for precision barrier evaluation. Engineered for food, medical, and packaging R&D, it delivers professional-grade permeation testing down to 0.001 cm³/m²·d within a compact benchtop footprint without compromising on accuracy or global compliance.
- 1 Dedicated Test Chamber
- 0.001 cm³/m²·d Resolution
- 5°C To 95°C Temperature
- 35% To 90% RH Humidity
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Oxygen Transmission Rate Tester (Single-Cell) – ToronOTR™ 1
Single-Cell Coulometric OTR Analyzer for Film and Package Testing
The ToronOTR™ 1 is a single-cell oxygen transmission rate tester designed to measure the oxygen transmission rate (OTR) of flexible films, sheeting, and finished packages. It uses a coulometric sensor with an equal-pressure test method to provide an absolute measurement of oxygen flux without gas-specific calibration. With one measurement cell and a compact benchtop design, the ToronOTR™ 1 provides a practical solution for laboratories introducing oxygen barrier testing. The system supports testing methods including ASTM D3985 and ISO 15105-2 for packaging, food, pharmaceutical, and materials applications.
The ToronOTR™ 1 oxygen transmission rate analyzer can test both flat film specimens and complete packages, allowing laboratories to evaluate oxygen barrier performance during material development as well as finished-package quality control. High-purity nitrogen transports permeated oxygen to the coulometric sensor, while digital carrier-flow control maintains consistent sweep conditions throughout the test. Controlled relative humidity helps reproduce specified environmental conditions, which is important because moisture can significantly affect oxygen barrier performance in many high-barrier polymer materials. A 24-bit delta-sigma converter provides high-resolution signal measurement for applications involving the low oxygen transmission levels associated with high-barrier films.
One-button operation initiates automated testing, while real-time data curves allow operators to monitor oxygen flux, temperature, and relative humidity throughout the test. Traceable reference-film calibration supports measurement verification and documentation for quality and audit requirements. Built-in overload protection helps safeguard the pressure, oxygen, and temperature circuits during operation.
The ToronOTR™ 1 Single-Cell Oxygen Transmission Rate Tester is suited to food packaging, pharmaceutical packaging, flexible packaging, polymer materials, quality control, and research and development laboratories requiring reliable oxygen barrier measurements in a compact benchtop configuration.
Oxygen Transmission Rate Tester (Single-Cell) – ToronOTR™ 1 Applications
The ToronOTR™ 1 provides oxygen barrier testing for applications where oxygen ingress can affect product quality, shelf life, stability, or material performance. Its coulometric measurement technology supports oxygen transmission testing across packaging, polymer materials, and finished-package applications.
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Food and Beverage Packaging: Measures oxygen ingress through films, laminates, and finished packages to help evaluate shelf-life performance and reduce risks associated with oxidation and rancidity.
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Pharmaceutical and Medical Packaging: Evaluates oxygen barrier performance of blister films, foils, and pouches used to protect oxygen-sensitive pharmaceuticals and medical products.
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Flexible Packaging and Converting: Supports the evaluation of high-barrier laminates, metallized films, and coated structures during material development, process qualification, and production quality control.
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High-Barrier Film R&D: Measures oxygen transmission through EVOH, PVDC, SiOx, nylon, and other barrier structures where oxygen permeability can vary with relative humidity.
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Oxygen Scavenger and Active Packaging: Evaluates oxygen-scavenging films and modified-atmosphere packaging by measuring their oxygen transmission characteristics.
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Finished Package Testing: Measures whole-package oxygen transmission for pouches, bottles, trays, closures, and other package formats using optional package fixtures.
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Electronics and Photovoltaic Encapsulation: Evaluates barrier films used to protect oxygen-sensitive electronic components and photovoltaic materials from oxygen exposure.
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Academic and Materials Research: Provides quantitative oxygen permeability and permeance data for polymer films and other barrier materials used in research and oxygen barrier studies.
Oxygen Transmission Rate Tester Standards
The ToronOTR™ 1 is designed around internationally recognized test methods for coulometric oxygen transmission rate measurement and equal-pressure gas transmission testing.
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ASTM D3985: Standard Test Method for Oxygen Gas Transmission Rate Through Plastic Film and Sheeting Using a Coulometric Sensor.
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ASTM F1307: Standard Test Method for Oxygen Transmission Rate Through Dry Packages Using a Coulometric Sensor.
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ASTM F1927: Standard Test Method for Determination of Oxygen Gas Transmission Rate, Permeability and Permeance at Controlled Relative Humidity Through Barrier Materials Using a Coulometric Detector.
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ASTM F2622: Standard Test Method for Oxygen Gas Transmission Rate Through Plastic Film and Sheeting Using Various Sensors.
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ISO 15105-2: Plastics — Film and Sheeting — Determination of Gas-Transmission Rate — Part 2: Equal-Pressure Method.
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JIS K 7126-2: Plastics — Film and Sheeting — Determination of Gas-Transmission Rate — Part 2: Equal-Pressure Method.
Oxygen Transmission Rate Tester (Single-Cell) – ToronOTR™ 1 Key Features
The ToronOTR™ 1 combines absolute coulometric oxygen measurement with automated operation in a compact single-cell configuration. Its testing and monitoring features support accurate, repeatable oxygen transmission rate (OTR) testing for films, sheeting, barrier materials, and finished packages.
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Coulometric Sensor Measurement: Uses an electrochemical sensor to measure oxygen flux directly, providing an absolute measurement that does not depend on gas-specific calibration.
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Film and Package Testing: Tests both flat film specimens and finished packages, with optional fixtures available for pouches, bottles, trays, and other package formats.
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Single-Cell Design: Concentrates the complete measurement system around one specimen, providing a compact configuration with straightforward operation.
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Controlled Relative Humidity Testing: Conditions gas streams to a specified relative humidity level, allowing oxygen barrier performance to be evaluated under controlled moisture conditions.
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Digital Carrier-Flow Control: Provides adjustable nitrogen sweep control to maintain stable and repeatable carrier-flow conditions throughout each test.
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One-Button Automated Testing: Initiates the complete testing sequence with a single command, helping reduce operator workload and test-to-test variation.
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24-Bit Delta-Sigma Data Acquisition: High-resolution signal conversion captures the low oxygen flux levels associated with high-barrier films and materials.
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Water-Bath Temperature Control: An optional temperature controller maintains the measurement cell at a specified temperature across a 5°C to 95°C range for isothermal oxygen transmission testing.
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Integrated Chamber Temperature Sensing: A built-in temperature sensor continuously monitors the measurement cell during testing.
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Built-In Ambient Monitoring: An internal temperature and humidity sensor records laboratory conditions with each test, supporting improved measurement traceability.
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Overload Protection: Dedicated protection circuits for pressure, oxygen, and temperature help safeguard the instrument during automated and unattended testing.
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Multiple Test Modes: Selectable testing modes provide flexibility for evaluating different material types, oxygen barrier levels, and testing requirements.
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Real-Time Data Curves: On-screen graphs display oxygen flux, temperature, and humidity data, allowing operators to monitor test progress and measurement stability in real time.
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Traceable Reference-Film Calibration: Calibration using certified reference films supports measurement verification and provides documented results for quality control and certification audits.
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Laboratory Data Management Integration: Connects with laboratory data management software to support centralized test records, data review, and reporting.
Theory and Method
The coulometric sensor method used by the ToronOTR™ 1 is an equal-pressure, or isostatic, technique for measuring oxygen transmission through films and packaging materials. The method determines oxygen transmission by measuring the oxygen that permeates through a specimen into an oxygen-free carrier stream. The test specimen separates the diffusion cell into upstream and downstream sides maintained at the same total pressure. High-purity oxygen flows across the upstream surface, while dry, oxygen-free nitrogen sweeps the downstream surface. With equal total pressure on both sides, oxygen permeation is driven by the difference in oxygen partial pressure across the specimen.
During testing, oxygen first dissolves into the material surface, diffuses through the polymer structure, and then desorbs into the nitrogen carrier stream. The carrier gas transports the permeated oxygen to the coulometric sensor, which operates as an electrochemical cell. Oxygen molecules reaching the sensor undergo reduction at the cathode and generate a predictable electrical charge. The resulting electrical current is proportional to the oxygen flux passing through the specimen. This provides an absolute measurement based on Faraday's law, rather than a relative measurement that depends on gas-specific calibration.
The instrument calculates the oxygen transmission rate (OTR) using the stabilized sensor current, carrier-gas flow rate, and exposed test area for film specimens. For finished-package testing, the calculation can be based on the complete package under the applicable test configuration. Controlled relative humidity is important for materials such as EVOH and nylon, where oxygen barrier performance can change significantly with moisture content. The ToronOTR™ 1 conditions the gas streams to the specified relative humidity to support controlled and repeatable testing conditions.
The single-cell configuration measures one specimen at a time, providing a focused testing setup for laboratory OTR measurements. An optional temperature controller maintains the measurement cell at a defined temperature, supporting isothermal testing when controlled temperature conditions are required.
Oxygen Transmission Rate Tester (Single-Cell) - ToronOTR™ 1 Technical Specifications
| Parameter | Specification |
|---|---|
| Film Test Range (Standard) | 0.01 to 6,300 cm³/m²·d |
| Film Test Range (Optional) | 0.07 to 63,000 cm³/m²·d |
| Film Resolution | 0.001 cm³/m²·d |
| Package Test Range | 0.0001 to 62 cm³/pkg·d |
| Package Resolution | 0.00001 cm³/pkg·d |
| Specimen Amount | 1 (single specimen) |
| Temperature Range | 5°C to 95°C (with temperature controller) |
| Temperature Accuracy | ±0.1°C |
| Humidity Range | 0% RH; 35% to 90% RH; 100% RH |
| Humidity Accuracy | ±1% RH |
| Test Area | 50 cm² |
| Specimen Size (Film) | ≥ 150 mm × 94 mm; thickness < 1 mm |
| Specimen Size (Package) | Max Ø120 mm × 400 mm |
| Carrier Gas | 99.999% Nitrogen |
| Carrier Flow | 0 to 200 ml/min |
| Gas Interface | 1/8 inch |
| Voltage | AC 220 V, 50 Hz (110V is also available) |
| Dimensions | 330 mm (L) × 600 mm (W) × 330 mm (H) |
| Net Weight | 28 kg |
Standard Delivery
| Item | Description |
|---|---|
| Main Unit | Single-cell coulometric OTR test instrument |
| Computer | Dedicated control PC |
| Control Software | Instrument operation and data-analysis software |
| Tank Regulator | Regulates carrier and test gas supply pressure |
| PCIe Acquisition Card | Data acquisition interface for the control PC |
| Communication Cable | Connects the instrument to the control PC |
| Sample Cutter | Prepares specimens to the required test size |
| Vacuum Grease | Seals the specimen at the chamber interface |
Optional Accessories
| Item | Description |
|---|---|
| Temperature Controller | Adds water-bath temperature control across a 5°C to 95°C span |
| Package Fixtures | Adapters for testing finished packages such as pouches and bottles |
| Reference Film | Certified film for traceable calibration |
| Vacuum Grease | Additional sealing grease for specimen mounting |
| Sample Cutter | Additional specimen-preparation cutter |
| Laboratory Data Management System | Centralized data management and reporting software |
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