Density, transport, rheological, dimensional, moisture, or other bulk…
single-condition measurement
Material Properties · Physical Properties
Gas, Oxygen and Water-Vapour Permeability (OTR/GTR/WVTR)
Use Gas, Oxygen and Water-Vapour Permeability (OTR/GTR/WVTR) to evaluate density, transport, rheological, dimensional, moisture, or other bulk physical properties with a scope matched to your sample, application, and decision.
- Price
- from£150 per sample, excl. VAT
- Turnaround
- 10 working days Preparation and scope dependent
- Available platforms
- MOCON PERMATRAN-W 150G
- Typical outputs
- Give the specific test valueMeasured property valuesCondition-dependent curvesMethod, uncertainty, and comparison notes
Why this service
What OTR/GTR/WVTR can help you understand
Gas, Oxygen and Water-Vapour Permeability (OTR/GTR/WVTR) is used to evaluate density, transport, rheological, dimensional, moisture, or other bulk physical properties. TESTDOG confirms the method,…
Differences between materials, batches, treatments, or service…
temperature, rate, or environment sweep
Whether the measured result supports a specification, root-cause, or…
comparative or specification-based programme
Choose the scope
Start from the question, not the tool
The method, preparation route and reporting depth depend on what you need to decide.
Single-condition measurement
density, transport, rheological, dimensional, moisture, or other bulk physical properties
- Best used when
- density, transport, rheological, dimensional, moisture, or other bulk physical properties
- Typical result
- Give the specific test value
- Preparation note
- Gas compatibility, fittings, flow and safety controls are confirmed before acceptance.
Temperature, rate, or environment sweep
differences between materials, batches, treatments, or service conditions
- Best used when
- differences between materials, batches, treatments, or service conditions
- Typical result
- Measured property values
- Preparation note
- Confirm dimensions, cutting permission and whether the original geometry must be preserved.
Comparative or specification-based programme
whether the measured result supports a specification, root-cause, or development decision
- Best used when
- whether the measured result supports a specification, root-cause, or development decision
- Typical result
- Condition-dependent curves
- Preparation note
- Gas compatibility, fittings, flow and safety controls are confirmed before acceptance.
Common outputs
A result package matched to the decision you need to make
Fields, conditions, processing and file formats are confirmed before work begins.
Give the specific test value reported with the agreed units, sample reference and measurement conditions.
Measured property values supplied in a labelled format suitable for direct sample or condition comparison.
Condition-dependent curves provided with the processing basis and quality checks agreed during technical review.
Method, uncertainty, and comparison notes included when selected in the confirmed reporting scope.
Sample requirements
What to provide before work begins
Provide representative, clearly labelled samples and identify the decision, feature or comparison that matters.
| Suitable sample | Submission requirement | Planning note |
|---|---|---|
| Gas / headspace | Provide the gas composition, concentration range, cylinder or sampling format and required pressure. | Gas compatibility, fittings, flow and safety controls are confirmed before acceptance. |
| Solid / component | Provide a clean, stable and clearly labelled specimen with the target face or region identified. | Confirm dimensions, cutting permission and whether the original geometry must be preserved. |
Objective: state the decision, comparison or acceptance criterion the work must support.
Handling and access: declare hazards, instability, confidentiality, file constraints or special logistics before dispatch or transfer.
Questions and answers
Common planning decisions
Short answers to issues that can change preparation, scope, timing or interpretation.
What should I send for Gas, Oxygen and Water-Vapour Permeability (OTR/GTR/WVTR)?
Provide gas / headspace, solid / component as applicable. Exact quantity, dimensions and preparation are confirmed during technical review.
Which scope should I choose?
Choose the scope that matches the decision, comparison and reporting depth you need; TESTDOG confirms the final route after technical review.
What will I receive?
Typical outputs include give the specific test value, measured property values, condition-dependent curves. Final files follow the confirmed reporting scope.
How long will it take?
Typical turnaround is 10 working days after sample acceptance and method confirmation.
Configure the service
Send the information needed to scope OTR/GTR/WVTR correctly
- Sample form, material, dimensions and quantity
- Feature or decision the result must address
- Required comparison, acceptance criterion or reference
- Preferred output and reporting depth