Particle size, porosity, surface area, roughness, wettability, or…
standard property measurement
Material Properties · Particle & Surface
BET Surface Area, Pore Size and Volumetric Gas Sorption
Use BET Surface Area, Pore Size and Volumetric Gas Sorption to evaluate particle size, porosity, surface area, roughness, wettability, or interfacial behaviour with a scope matched to your sample, application, and decision.
- Price
- from£30 per sample, excl. VAT
- Turnaround
- 7 working days Preparation and scope dependent
- Available platforms
- Micromeritics 3FlexQuantachrome AUTOSORB IQ
- Typical outputs
- BET specific surface areaAdsorption and desorption isothermsPore-size distributionDegassing and analysis conditions
Why this service
What BET can help you understand
BET Surface Area, Pore Size and Volumetric Gas Sorption is used to evaluate particle size, porosity, surface area, roughness, wettability, or interfacial behaviour. TESTDOG confirms the method,…
Differences between materials, batches, treatments, or service…
distribution or condition comparison
Whether the measured result supports a specification, root-cause, or…
advanced pore, surface, or interface analysis
Choose the scope
Start from the question, not the tool
The method, preparation route and reporting depth depend on what you need to decide.
Standard property measurement
particle size, porosity, surface area, roughness, wettability, or interfacial behaviour
- Best used when
- particle size, porosity, surface area, roughness, wettability, or interfacial behaviour
- Typical result
- BET specific surface area
- Preparation note
- Expected surface area determines mass; high-area samples may need about 50 mg and low-area samples about 0.5 g.
Distribution or condition comparison
differences between materials, batches, treatments, or service conditions
- Best used when
- differences between materials, batches, treatments, or service conditions
- Typical result
- Adsorption and desorption isotherms
- Preparation note
- Confirm whether cutting is permitted and provide a safe degassing temperature before analysis.
Advanced pore, surface, or interface analysis
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
- Pore-size distribution
- Preparation note
- Expected surface area determines mass; high-area samples may need about 50 mg and low-area samples about 0.5 g.
Common outputs
A result package matched to the decision you need to make
Fields, conditions, processing and file formats are confirmed before work begins.
BET specific surface area reported with the agreed units, sample reference and measurement conditions.
Adsorption and desorption isotherms supplied in a labelled format suitable for direct sample or condition comparison.
Pore-size distribution provided with the processing basis and quality checks agreed during technical review.
Degassing and analysis conditions 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 |
|---|---|---|
| Powder / granules | Provide a dry, homogeneous sample; reduce granules only when preserving their original form is not required. | Expected surface area determines mass; high-area samples may need about 50 mg and low-area samples about 0.5 g. |
| Film / block / fibre | Provide clean, dry pieces, ideally no more than about 3 mm across where practical. | Confirm whether cutting is permitted and provide a safe degassing temperature before analysis. |
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 BET Surface Area, Pore Size and Volumetric Gas Sorption?
Provide powder / granules, film / block / fibre 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 bet specific surface area, adsorption and desorption isotherms, pore-size distribution. Final files follow the confirmed reporting scope.
How long will it take?
Typical turnaround is 7 working days after sample acceptance and method confirmation.
Configure the service
Send the information needed to scope BET 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