Pore Size

Exponential Business and Technologies Company

Bridging You and Nano

Pore Size

Porometry employs the usage of a wetting fluid of known surface tension and a miniscule contact angle. The typical wetting fluid, Porofil, fully wets a variety of sample surfaces. Unlike porosimetry, porometry does not require a vacuum environment or mercury to measure pore size. Porometry measurement with a porometer can analyze any material with through pores and can characterize the pore number, pore size, pore density, bubble point and gas/liquid permeability.

Typical Experimental Results:

pore size

Cumulative and differential pore number for a thin film membrane

Pore Size Analysis of Two Membrane Samples

Parameters	Membrane A	Membrane B
Maximum Pore Size (µm)	0.5236	1.8547
Mean Flow Pore Size (µm)	0.2264	0.1495
Minimum Pore Size (µm)	0.1374	0.1026
Bubble Point Pressure (bar)	1.2224	0.3451
Bubble Point Flow Rate (L/min)	0.0687	0.0418
Pore Density (cm ^-2)	1.46x10 ^9	4.25x10 ^9
Initial Contact Angle (°)	79.2	72.2
Contact Angle After 20s (°)	72.6	55.8
Zeta Potential at pH 8 (mV)	33.025	-13.815

Applications:

Biomedical Porous Materials	Bubble Point Flow Rate	Bubble Point Pressure
Fabrics	Filtration Membranes	Gas/Liquid Permeability
Maximum Pore Size	Mean Flow Pore Size	Meshes
Minimum Pore Size	Papers	Polymeric Membranes
Pore Density	Pore Number	Pore Volume
Porofil Wetting Fluid	Sintered Materials	Through Pore Size

For more information please read our application notes.

Instruments: Quantachrome Porometer 3G zh

pore size 1

Key Specifications:

Pore Size Range	0.018 – 500µm
Pressure Range	0.015 – 500psi
Pressure Controllers	2
Pressure Sensors	3
Flow Rate Range	0-10L/min; 0-200L/min
Wetting Fluid	Porofil