Particle size, porosity, surface area, roughness, wettability, or…
standard property measurement
Material Properties · Particle & Surface
Capillary Flow / Bubble-Point Porometry (CFP)
Use Capillary Flow / Bubble-Point Porometry (CFP) to evaluate particle size, porosity, surface area, roughness, wettability, or interfacial behaviour with a scope matched to your sample, application, and decision.
- Price
- from£60 per sample, excl. VAT
- Turnaround
- 10 working days Preparation and scope dependent
- Available platforms
- Micromeritics 3FlexPOROLUX 100FM, Prometer, Belgium
- Typical outputs
- Bubble-point pressurePore-size distributionWet and dry flow curvesTest fluid and pressure conditions
Why this service
What CFP can help you understand
Capillary Flow / Bubble-Point Porometry (CFP) is used to evaluate particle size, porosity, surface area, roughness, wettability, or interfacial behaviour. TESTDOG confirms the method, preparation,…
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
- Bubble-point pressure
- Preparation note
- Exact mass and any drying or dispersion step are confirmed after technical review.
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
- Pore-size distribution
- Preparation note
- State the substrate, nominal thickness and whether sectioning or mounting is permitted.
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
- Wet and dry flow curves
- Preparation note
- State the fibre type, orientation and whether cutting, bundling or mounting is acceptable.
Common outputs
A result package matched to the decision you need to make
Fields, conditions, processing and file formats are confirmed before work begins.
Bubble-point pressure reported with the agreed units, sample reference and measurement conditions.
Pore-size distribution supplied in a labelled format suitable for direct sample or condition comparison.
Wet and dry flow curves provided with the processing basis and quality checks agreed during technical review.
Test fluid and pressure 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 / particles | Provide a dry, homogeneous and clearly labelled sample in a sealed container. | Exact mass and any drying or dispersion step are confirmed after technical review. |
| Film / coating | Provide the coated substrate or a flat film with the test surface and coating side clearly marked. | State the substrate, nominal thickness and whether sectioning or mounting is permitted. |
| Fibre / textile | Provide clean, dry fibres or a representative textile section in protective packaging. | State the fibre type, orientation and whether cutting, bundling or mounting is acceptable. |
| Liquid / solution | Provide a sealed, compatible container labelled with composition, concentration and solvent. | Declare volatility, corrosivity, suspended solids and any storage or temperature requirement. |
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 Capillary Flow / Bubble-Point Porometry (CFP)?
Provide powder / particles, film / coating, fibre / textile, liquid / solution 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 bubble-point pressure, pore-size distribution, wet and dry flow 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 CFP 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