AccuPore Capillary Flow Porometer, Micromeritics technology

AccuPore, a Micromeritics Technology, enables high resolution, low noise pressure-flow curves for highly detailed through-pore size distributions that reflect physical pore architecture.

Manufacturer	Micromeritics
Product Series	AutoPore, a Micromeritics Technology
Measurement principle	Capillary Flow Porometry ASTM F316
Application	Density, pore size and volume, Surface Area & Porosity
Pore size range	0.013 µm to 500 µm
Max Pressure (Ramp/ Step)	500 psi / 35 bar
Max Flow Rate	200 L/min
Sample Sizes	25 mm diameter standard. Adapters available for 13 mm, 47 mm diameter
Analysis Gas Supply	Air or N2

AccuPore Capillary Flow Porometer (CFP), a Micromeritics Technology, is a fast, and reliable method to determine the size distribution (13nm to 500µm) of through-pores, i.e pores that span from one side of a surface of a material to the other. CFP is an important measurement in the development or production of the sheet-goods used for membranes, separators, filtration media, technical fabrics and more.

CFP is a non-destructive technique based on capillary effects for analysing porous materials. The process begins by submerging a sample in a wetting liquid that fully saturates all accessible through-pores. Gas pressure is then applied to displace the liquid from the pores, followed by measuring the flow across the now-dry sample. The resulting pressure-flow curve is used to calculate critical parameters such as Bubble point/ largest pore, Mean flow pore, Smallest pore and Pore size distribution to reveal the overall structure of pores in a membrane.

Unlike traditional CFP systems, 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, reducing the need for expensive high-pressure gas.

The flexible design of the AccuPore CFP 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 provide reliable measurements to the highest pressures, even for thin or weak membranes while also reducing gas consumption by up to 95%.

Gas-liquid CFP is a direct complement to mercury intrusion porosimetry (MIP), providing a rich description of pore architecture. MicroActive allows users to easily co-plot results from the AccuPore CFP and AutoPore MIP to fully describe the pore characteristics of a material. MicroActive software streamlines data processing, offering detailed plotting, analysis and reporting, including statistical process control charts and results overlays.

These capabilities make the AccuPore particularly valuable for users requiring high precision in characterising filtration efficiency or material permeability especially for optimising the design and performance of battery separators and fuel cell membranes.

EASY, ACCURATE, MOST VERSATILE MEASUREMENTS

High resolution, low noise pressure-flow curves for pore size distributions WITHOUT curve fitting or post-processing.
Measurements are fast, sample preparation takes less than 30 seconds, and no mercury is involved.
Over 1000 pts/experiment, 20 Hz internal data processing speed.

CUT COSTS WITH SMART GAS SELECTION

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 recurring costs.

EXCLUSIVE PRESSURE RAMP AND STEP CAPABILITY

SmartFlow system guarantees the most precise pressure control, highest sensitivity, and highest signal to noise.
PRESSURE RAMP: Increasing pressure at a steady rate shortens measurement time, provides a highly repeatable measurement, and produces data points tightly spaced in pressure.
PRESSURE STEP: 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.

ULTIMATE SAMPLE SIZE FLEXIBILITY

Sample diameters: 13 mm, 25, mm, 47 mm all within the same sample chamber. A selection of sample supports provide reliable measurements to the highest pressures, even for thin or weak membranes while also reducing gas consumption by up to 95%.

WETTING FLUIDS

Meet analytical challenges of new material characterisation and support requirements of legacy methods, eg Galwik has 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.

INTUITIVE INTERFACE & MICROACTIVE SOFTWARE

Built-in Breeze touchscreen UI with full standalone instrument control and data analysis.
Remote PC control and data analysis over network connection.
Advanced analysis and reporting, coplot with complementary porosity data

BATTERY AND FUEL CELL SEPARATORS AND MEMBRANES
Optimise 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.

FILTRATION
Predict and ensure size-based selectivity and mass-transfer rate by optimizing the number and size of pores.

NON-WOVENS
Often characterised 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.

METAL AND CERAMICS
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.

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