The Best Device To Help You In Measuring Pore Diameter & Throat Diameter

An often-asked question is whether or not an advanced permeability porometer is the best measurement tool for pores. The answer to this varies on the various capabilities of the machine. But there are 2 measurements in particular that are deemed most prominent in determining this.

One is the measurement of pore diameter and throat diameter. The advanced permeability porometer is capable of determining both of these measurements. Moreover, the device can also be used to determine the permeability of porous solids.

How it works is, the air is forced to flow through a test sample. Later calculations are made based on the steady-state flow rate and the corresponding pressure drop rate. This data proved vitally necessary for calculating permeability using the different units known as Gurley, Frazier, and Rayl units.

The liquid is flown through a sample, and then it’s measured by time, and the pressure of the liquid column drops. This method creates reproducible results even for materials that are hydrophobic in nature. A pressure of 200psi is applied to the pores creating a permeable sample that’s accurate in both weight and measurement.

Furthermore, the wetting liquid is allowed to fill the pores naturally in the sample and then administered to non-reactive gas to help displace the liquid from the pores. The gas pressure and flow rates through the wet and dry samples are then measured. The pressure is required to remove the liquid from the pores and causes the gas to flow where the pore diameter is. The surface tension of the liquid is the difference in gas pressure. Now, from the measured gas pressure and the flow' rates, the pore throat diameters, pore size distribution, and gas permeability are calculated.

Lastly,

The advanced permeability porometer is capable of measuring more than just these 2 diameters. It can also measure bubble point, mean flow of the pore diameter, the range of the pore diameter as well as the distribution of the pore size.

This device is currently being used globally for the purpose of R&D and quality control in industries such as pharmaceuticals, biotech, healthcare, food, hygiene, etc. The tested membranes vary from material to material, such as powders, ceramics, batteries, paper, etc. Now when that’s out of the way,

Which device do you think is best?