The Micromeritics AccuPore measures through-porosity using capillary flow porometry, a fast, reliable method to determine the size and relative abundance of throughpores in sheets and membranes.
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Flexible easy-to-use sample chamber for simple sample loading, including samples from 13 mm to 47 mm diameter
Intuitive Breeze interface makes it easy to measure samples and review results with or without a PC
Convenient USB access for data transfer or peripheral device integration - with even more ports at the back of the instrument
High-speed control, collection, and data processing provides the most accurate pressure control, highest curve resolution, and most detailed pore size distribution by processing measurements at up to 20 Hz
MIC Net empowers your lab to operate as one by synchronizing results and methods across AccuPore instruments. Laboratory network connection provides simple data retrieval and LIMS integration
Auto-switching gas supply reduces cost of operation by using low pressure compressed air when suitable, allowing high pressure bottled gas tanks to last longer
Capillary Flow Porometry — also known as Gas Liquid Porometry — is a fast, reliable method to determine the size and relative abundance of through-pores in sheets and membranes.
This pressure-based technique measures the minimum diameter of a pore, averaging over a significant test area, without the need for model-fitting or image processing. Measurements are fast, sample preparation takes less than 30 seconds, and no mercury is involved.
The SmartFlow system in the Micromeritics AccuPore provides precision control for porosimetry in either pressure ramp or step modes. The option to perform measurements in either mode ensures the correct measurement is available from routine qualification to detailed characterization.
Increasing pressure at a steady rate shortens measurement time, provides a highly repeatable measurement, and produces data points tightly spaced in pressure.
Routine operation produces high-resolution, highly repeatable data, in a short time.
Pausing at each pressure for equilibration allows all pores of a given diameter to fully empty before moving to the next pressure, regardless of pore length or tortuosity.
This offers the highest possible resolution and absolute pore size accuracy, especially for complex pores and thick sheets.
Highly detailed pore size distributions are enabled due to high-resolution, low-noise pressure-flow curves in the AccuPore. The distributions reflect physical pore architecture without curve fitting or post-processing requirements.
![[Micromeritics - AccuPore - Pore distribution graphs.png] Micromeritics - AccuPore - Pore distribution graphs.png](https://dam.malvernpanalytical.com/a00177c5-2864-4927-be97-b29700da45c4/Micromeritics%20-%20AccuPore%20-%20Pore%20distribution%20graphs_Original%20file.png)
The Micromeritics AccuPore features SmartFlow, an advanced flow control system that guarantees the most precise pressure control, highest sensitivity, and lowest signal noise.
The SmartFlow control system uses high-resolution 24-bit electronics operated at 20 Hz for optimal signal quality and system response.
SmartFlow has eight complementary transducers and controllers, which provide the most responsive and stable performance, even during rapidly changing conditions such as pore opening.
Optimize the rate of ion transport and physical separation to ensure device safety. Precision sample supports and advanced pressure control enable accurate measurements up to high pressure for small pores and thin membranes.
Predict and ensure size-based selectivity and mass-transfer rate by optimizing the number and size of pores.
Often characterized by a broad distribution of pore sizes due to their production methods. These are common choices for filtration media. In-plane porosity and irregular pore shapes make steady flow determination of bubble point especially important.
Preferred for thermal, physical, and chemical resistance, these materials often have highly porous structures. The three-dimensional porosity of these materials makes it especially important to measurement porosity in the direction of intended flow.
| Technology | Capillary flow porometry
ASTM F316 |
|---|---|
| Analysis method | Pressure ramp
Pressure step |
| Pore size range | 0.013 µm to 500 µm |
| Maximum pressure | 500 psi / 35 bar |
| Maximum flow rate | 200 L/min |
| Analysis gas supply | Air or N2 |
| Modes of operation | Bubble point (direct measure)
Capillary flow porometry by: Dry/Wet, Wet/Dry, Wet/Calculated Dry |
| Dimensions | 57 cm (W) x 61 cm (D) |
| Curve resolution | >1000 data points per run
20 Hz internal data processing speed |
| Sample size | 25 mm diameter standard
Adapters available for 13 mm, 47 mm diameter |
| Notes | Key highlights:
|
SmartFlow also enables direct measurement of true bubble point through a proprietary flowcontrolled method that provides unmatched accuracy and repeatability.
Conventional estimates of bubble point from pressure ramps lack sensitivity and can underestimate the largest pore diameter. SmartFlow ensures precise bubble point measurements, typically much better than ±1%.
| First Bubble Point Size (µm) | ||||
|---|---|---|---|---|
| Measurement | Track-etched membrane A | Track-etched membrane B | Track-etched membrane C | Track-etched membrane D |
| 1 | 1.153 | 0.309 | 0.092 | 0.055 |
| 2 | 1.151 | 0.309 | 0.092 | 0.055 |
| 3 | 1.170 | 0.308 | 0.092 | 0.054 |
| 4 | 1.164 | 0.309 | 0.091 | 0.054 |
| 5 | 1.162 | 0.308 | 0.092 | 0.054 |
| 6 | 1.180 | 0.309 | 0.091 | 0.054 |
| 7 | 1.166 | 0.309 | 0.091 | 0.054 |
| 8 | 1.178 | 0.310 | 0.091 | 0.054 |
| 9 | 1.175 | 0.308 | 0.090 | 0.054 |
| 10 | 1.165 | 0.309 | 0.090 | 0.054 |
| Average | 1.166 | 0.309 | 0.091 | 0.054 |
| Relative standard deviation | 0.83% | 0.22% | 0.72% | 0.54% |
The intuitive Breeze touch interface gives you everything you need at your fingertips. Perform a measurement, review past results, send a report to print or to LIMS (PDF, text, or Excel) with the touch of a finger. Save space in your lab by eliminating a PC from the bench.
Prefer to work from a PC nearby or in your office? You can do that too! Execute measurements, view status of multiple instruments, or review results anywhere.
Different materials require specific operating conditions. Whether measuring bubble point, routine pore size distribution, or detailed structure analysis, the Micromeritics AccuPore simplifies it all.
With SmartFlow pressure control, it doesn’t take an expert to operate. Fewer settings and adjustable parameters make method development fast and worry-free.
Use the Method Library to define, store, and recall your methods easily, so you always measure the same way — the right way.
Reduce operational costs with intelligent gas source selection. The AccuPore uses a compressor for low-pressure operations (bubble point measurement and large pores) and switches to high-pressure bottled gas for analysis of small pores.
This reduces the need for expensive high pressure gas, lowering your recurring costs.
MicroActive software streamlines data processing, offering detailed plotting, analysis and reporting, including statistical process control charts and results overlays.
Gas-liquid capillary flow porometry is a direct complement to mercury intrusion porosimetry (MIP), providing a rich description of pore architecture. Only MicroActive enables you to easily co-plot results from the AccuPore CFP and AutoPore MIP to fully describe the pore characteristics of a material.
Never hunt for a past result or worry that your method settings are out of date. MIC Net is an instrument-to-instrument network that shares and stores results and methods across devices.
The flexible design of the AccuPore capillary flow porometry makes it simple to move between sample diameters: 13 mm, 25, mm, 47 mm all within the same sample chamber.
A selection of sample supports provides reliable measurements to the highest pressures, even for thin or weak membranes while also reducing gas consumption by up to 95%.
Micromeritics wetting fluids meet the analytical challenges of new material characterization and support the requirements of legacy methods.
Galwik is often preferred for its low surface energy and vapor pressure: filling pores completely and resisting evaporation during analysis.
Porewik is also available for legacy method compatibility and specific demanding applications.
Install and operate the AccuPore with confidence, knowing it has been designed and tested to the highest standards for EMC compliance and operator safety.
Please contact support for the latest user manuals.
Please contact support for the latest software version.
Flexible easy-to-use sample chamber for simple sample loading, including samples from 13 mm to 47 mm diameter
Intuitive Breeze interface makes it easy to measure samples and review results with or without a PC
Convenient USB access for data transfer or peripheral device integration - with even more ports at the back of the instrument
High-speed control, collection, and data processing provides the most accurate pressure control, highest curve resolution, and most detailed pore size distribution by processing measurements at up to 20 Hz
MIC Net empowers your lab to operate as one by synchronizing results and methods across AccuPore instruments. Laboratory network connection provides simple data retrieval and LIMS integration
Auto-switching gas supply reduces cost of operation by using low pressure compressed air when suitable, allowing high pressure bottled gas tanks to last longer
Capillary Flow Porometry — also known as Gas Liquid Porometry — is a fast, reliable method to determine the size and relative abundance of through-pores in sheets and membranes.
This pressure-based technique measures the minimum diameter of a pore, averaging over a significant test area, without the need for model-fitting or image processing. Measurements are fast, sample preparation takes less than 30 seconds, and no mercury is involved.
The SmartFlow system in the Micromeritics AccuPore provides precision control for porosimetry in either pressure ramp or step modes. The option to perform measurements in either mode ensures the correct measurement is available from routine qualification to detailed characterization.
Increasing pressure at a steady rate shortens measurement time, provides a highly repeatable measurement, and produces data points tightly spaced in pressure.
Routine operation produces high-resolution, highly repeatable data, in a short time.
Pausing at each pressure for equilibration allows all pores of a given diameter to fully empty before moving to the next pressure, regardless of pore length or tortuosity.
This offers the highest possible resolution and absolute pore size accuracy, especially for complex pores and thick sheets.
Highly detailed pore size distributions are enabled due to high-resolution, low-noise pressure-flow curves in the AccuPore. The distributions reflect physical pore architecture without curve fitting or post-processing requirements.
The Micromeritics AccuPore features SmartFlow, an advanced flow control system that guarantees the most precise pressure control, highest sensitivity, and lowest signal noise.
The SmartFlow control system uses high-resolution 24-bit electronics operated at 20 Hz for optimal signal quality and system response.
SmartFlow has eight complementary transducers and controllers, which provide the most responsive and stable performance, even during rapidly changing conditions such as pore opening.
Optimize the rate of ion transport and physical separation to ensure device safety. Precision sample supports and advanced pressure control enable accurate measurements up to high pressure for small pores and thin membranes.
Predict and ensure size-based selectivity and mass-transfer rate by optimizing the number and size of pores.
Often characterized by a broad distribution of pore sizes due to their production methods. These are common choices for filtration media. In-plane porosity and irregular pore shapes make steady flow determination of bubble point especially important.
Preferred for thermal, physical, and chemical resistance, these materials often have highly porous structures. The three-dimensional porosity of these materials makes it especially important to measurement porosity in the direction of intended flow.
| Technology | Capillary flow porometry
ASTM F316 |
|---|---|
| Analysis method | Pressure ramp
Pressure step |
| Pore size range | 0.013 µm to 500 µm |
| Maximum pressure | 500 psi / 35 bar |
| Maximum flow rate | 200 L/min |
| Analysis gas supply | Air or N2 |
| Modes of operation | Bubble point (direct measure)
Capillary flow porometry by: Dry/Wet, Wet/Dry, Wet/Calculated Dry |
| Dimensions | 57 cm (W) x 61 cm (D) |
| Curve resolution | >1000 data points per run
20 Hz internal data processing speed |
| Sample size | 25 mm diameter standard
Adapters available for 13 mm, 47 mm diameter |
| Notes | Key highlights:
|
SmartFlow also enables direct measurement of true bubble point through a proprietary flowcontrolled method that provides unmatched accuracy and repeatability.
Conventional estimates of bubble point from pressure ramps lack sensitivity and can underestimate the largest pore diameter. SmartFlow ensures precise bubble point measurements, typically much better than ±1%.
| First Bubble Point Size (µm) | ||||
|---|---|---|---|---|
| Measurement | Track-etched membrane A | Track-etched membrane B | Track-etched membrane C | Track-etched membrane D |
| 1 | 1.153 | 0.309 | 0.092 | 0.055 |
| 2 | 1.151 | 0.309 | 0.092 | 0.055 |
| 3 | 1.170 | 0.308 | 0.092 | 0.054 |
| 4 | 1.164 | 0.309 | 0.091 | 0.054 |
| 5 | 1.162 | 0.308 | 0.092 | 0.054 |
| 6 | 1.180 | 0.309 | 0.091 | 0.054 |
| 7 | 1.166 | 0.309 | 0.091 | 0.054 |
| 8 | 1.178 | 0.310 | 0.091 | 0.054 |
| 9 | 1.175 | 0.308 | 0.090 | 0.054 |
| 10 | 1.165 | 0.309 | 0.090 | 0.054 |
| Average | 1.166 | 0.309 | 0.091 | 0.054 |
| Relative standard deviation | 0.83% | 0.22% | 0.72% | 0.54% |
The intuitive Breeze touch interface gives you everything you need at your fingertips. Perform a measurement, review past results, send a report to print or to LIMS (PDF, text, or Excel) with the touch of a finger. Save space in your lab by eliminating a PC from the bench.
Prefer to work from a PC nearby or in your office? You can do that too! Execute measurements, view status of multiple instruments, or review results anywhere.
Different materials require specific operating conditions. Whether measuring bubble point, routine pore size distribution, or detailed structure analysis, the Micromeritics AccuPore simplifies it all.
With SmartFlow pressure control, it doesn’t take an expert to operate. Fewer settings and adjustable parameters make method development fast and worry-free.
Use the Method Library to define, store, and recall your methods easily, so you always measure the same way — the right way.
Reduce operational costs with intelligent gas source selection. The AccuPore uses a compressor for low-pressure operations (bubble point measurement and large pores) and switches to high-pressure bottled gas for analysis of small pores.
This reduces the need for expensive high pressure gas, lowering your recurring costs.
MicroActive software streamlines data processing, offering detailed plotting, analysis and reporting, including statistical process control charts and results overlays.
Gas-liquid capillary flow porometry is a direct complement to mercury intrusion porosimetry (MIP), providing a rich description of pore architecture. Only MicroActive enables you to easily co-plot results from the AccuPore CFP and AutoPore MIP to fully describe the pore characteristics of a material.
Never hunt for a past result or worry that your method settings are out of date. MIC Net is an instrument-to-instrument network that shares and stores results and methods across devices.
The flexible design of the AccuPore capillary flow porometry makes it simple to move between sample diameters: 13 mm, 25, mm, 47 mm all within the same sample chamber.
A selection of sample supports provides reliable measurements to the highest pressures, even for thin or weak membranes while also reducing gas consumption by up to 95%.
Micromeritics wetting fluids meet the analytical challenges of new material characterization and support the requirements of legacy methods.
Galwik is often preferred for its low surface energy and vapor pressure: filling pores completely and resisting evaporation during analysis.
Porewik is also available for legacy method compatibility and specific demanding applications.
Install and operate the AccuPore with confidence, knowing it has been designed and tested to the highest standards for EMC compliance and operator safety.
Please contact support for the latest user manuals.
Please contact support for the latest software version.
The easiest, most accurate, most versatile measurement of through-pores using capillary flow porometry.