Perm Porometers: Advantages and Shortcomings

Advanced Permeability porometer has the capability of measuring mean flow pore diameter, pore diameter range, pore size distribution, bubble point, and pore throat diameter. Perm porometers are used for quality control and R&D in industries universally such as filtration, pharmaceuticals, healthcare, biotechnology, fuel cell, battery, food, household, and battery separators.

In the past, mercury intrusion porosimeter and nitrogen adsorption were commonly used for measuring the pore, size of powders, depending on the range of the pore size. However, these methods were not suitable for determining the pore sizes of membranes.

Therefore, a new measuring tool was invented in which the liquid flows from a sample is measured by the distance a column of liquid drops according to the time and pressure. This method gives fast results, even for hydrophobic materials, as the pressure can be increased up to 200 psi to the liquid column to force the liquid out from the sample.

How is it used?

The wetting liquid is passed through the pores and a non-reactive gas is allowed to shift the liquid from the pores in an advanced permeability porometer. The gas pressure and ow rates through dry and wet samples are measured accurately. The pressure of the gas and ow rates needed to remove liquid from the pores and cause gas to ow is measured using the formula by D= 4y cos θ/p. Pore throat diameter, pore size distribution, and gas permeability can easily be calculated from the measured gas pressure and ow rates.

Advantages:

· Advanced permeability porometers yield very objective, accurate, and reproducible results, considerably reduce test duration, and require minimal operator involvement.

· The pressure drops provide the essential data for the calculation of the permeability using Gurley, Rayl, and Frazier units.

· Ability to switch between two or more flowmeters.

· Can measure the permeability of liquids such as alcohol, juices, and water.

· All controls, measurement, data reduction, report preparation, and data collection can easily be done by window-based software. Can be controlled manually as well.

· Advanced permeability porometer accepts a wide range of sample sizes and types with non-destructive testing.

· Test display depicts testing results and status with a real-time graphical demonstration throughout the operation.

Short-comings:

· Advanced permeability porometer is not accessible to many labs and industries.

· Very low permeability samples are tested using an accurate weighing balance to measure liquid flow rate.

· Advanced permeability porometer requires high costs for maintenance

· Needs more research-based backup

Conclusion:

Advanced permeability porometer have many benefits; hence, they catch attention. Manufacturers and admirers are researching it. With the hope that this technology will improve in the future. Though this is a great innovation, like many others they too have some short-comings. But as this is a new invention in the market, the possibility of improvement is vast.

Do you think this new technology will be accepted with open hands? Let us know your thoughts on the advanced permeability porometer below.

How Does an Automated Humid Air Porometer Work?

A porometer is an instrument that is used to measure the porosity of the membranes where the liquid is displaced from the pores of pressurized gas. Although porometers are used widely in industries, here is a quick beginner guide on how an automated humid air porometer works.

How Does an Automated Humid Air Porometer Work?

Automated Humid Air Porometer is a top-class product from Porous Materials, a leader in porosity solutions. The company has invested 35 years of hard work and learning in this machine, which provides highly accurate and dependable results.

This automated machine is designed for linear turbulence-free test gas flow. What makes this machine extraordinary is that it uniformly distributes the pressure to the O-ring seals, eliminating the need to tighten the cap on the sample chamber by hand. The pressure is measured close to the sample, and thus, the correction in differential pressure is minimized.

The machine is easy to use and hardly requires operator assistance; also, it provides quick results due to the automatic addition of wetting liquid.

What Makes Automated Humid Air Porometer from Porous Material Special?

This machine produces accurate results in the minimum possible time. The machine is fully automated and is sophisticated equipment that suits a variety of industries.

The machine stands 61 inches tall and 30-inch-wide with a depth of 26 inches. The ideal power for the machine is 110/220 VAC at 50/60 Hz; however, the company (Porous Materials) claims that it can alter the power requirements as per the needs of clients.

The accuracy of this porometer is pinpoint. It is designed to be the best porometer with a resolution of 1 in 60,000 and with a pressure transducer range of 0 – 500 psi, it is one of the best among the rest.

The pore size range of this automated humid air porometer starts from 0.013 and ends at 200 microns. The porometer is compatible with clean, dry, compressed, non-inflammable, and non-corrosive gases.

Capabilities of Automated Humid Air Porometer

· Bubble Point (the largest through pore throat diameter)

· Mean flow pore diameter (50% of the flow is through pores smaller than the mean flow pore)

· Pore diameter range

· Pore distribution

· Gas permeability in any desired units, including Frazier, Gurley, Rayl, and Darcy

· Liquid Permeability: Measures liquid flow rate through the sample when pressure is applied to excess liquid on the sample. The volume of liquid measured using a penetrometer

Conclusion:

The fully automated machine, Advanced Automated Porometers produce accurate results, requiring minimal operator involvement and reduced test duration. Designed for linear turbulence-free test gas flow, the machine has set its mark in several industries for its numerous features and capabilities. For more information visit our site https://pmiapp.com/