- pmiappofficial
- May 17, 2021
- 3 min read
The Ultra Nano Porometer and the Advanced Capillary Flow Porometer are two decisive machines that have helped modern-day industries achieve economies and efficiency in processes. It’s because these advanced machines have transformed mundane membrane and sample testing processes into simple tasks that can be carried out within a few minutes.
Yet, both of these machines are different and special in their unique functions and purpose. To better understand which of these machines to choose for your industry, you must know the differences.
Today, let’s differentiate the two machines so that you can come to decide which one suits your industrial needs the best.
Advanced Capillary Flow Porometer Put Against The Ultra Nano Porometer
Advanced Capillary Flow Porometer

The Advanced Capillary Flow Porometer is used for R&D and quality assurance purposes in industries globally. These industries include nonwovens, healthcare, biotechnology, hygienic products, fuel cell, household, pharmaceutical, battery, and filtration.
The tested samples include membranes, battery separators, health care products, ceramics, powders, filter media, and paper.
This machine produces very objective, reproducible, and accurate results with considerably reduced test durations and requires minimal operator involvement. The Advanced porometer is fully automated and is designed for linear turbulence-free test gas flow. The pressure is measured close to the sample; therefore, the correction term in the differential pressure calculation is minimized.
The required amount of pressure is uniformly applied to the O-ring seals for the sample, eliminating hand tightening for pressure application. The automatic addition of wetting liquid reduces test time appreciably. This sophisticated instrument has found applications in many industries.
The way testing works here is that the liquid is first allowed to fill the sample pores spontaneously, and a non-reacting gas is passed through them. The purpose of this gas is to displace the liquid in the sample pores.
Ultra Nano Porometer

Nowadays, membrane researchers demand numerous tools for characterizing nonwoven bases and Micro, Ultra, and Nano-filtration membranes. This has made conventional porometers redundant as they tend to damage and harm the samples with their high pressure.
The Ultra Nano Porometer combines the benefits of two porometers into a single machine. These include the Capillary Flow Porometer and the Liquid-Liquid Porometer. Combining the two can yield accurate and reproducible results with precise pore characteristics.
The Ultra Nano Porometer is widely used to measure various pore characteristics like liquid flow rate, pore distribution, and mean pore size. The machine is mainly designed for calculating the pore structure for materials with broader pore sizes from relatively minor to relatively large structures.
The tests are initiated when a wetting liquid fills the pores. You can select two wetting liquids for running the tests. The first liquid that you select lowers surface tension and is used to fill the sample pores. The second liquid is added on top of the sample and is pressurized to displace the first one from the pores, letting it flow through pores.
Once done, the flow rate of the Capillary Flow porometery is conducted where the wetting liquid spontaneously fills the pores. A non-corrosive gas is then allowed to displace this liquid from the pores. Meanwhile, the gas pressure and flow rates through wet and dry samples are accurately measured.
The pressure is required for removing the liquid from the pores and cause gas to flow given by the first liquid without wetting the second liquid sample.
The Ultra Nano Porometer can calculate using both the techniques of the Capillary Flow and Liquid-Liquid Porometer in one platform. This machine covers a broad range of materials that fall in the filtration range of Micro/Ultra/Nano through pore characterization.
Concluding The Differences,
The Capillary Flow Porometer is the only machine product that performs the capillary flow porometery technique. On the other hand, the Ultra Nano Porometer can perform both the Capillary Flow Porometery and the Liquid-Liquid porometery at once. This makes it a much more versatile and advanced option for more sophisticated testing. Yet, which of the two machines will you be choosing?