Difference Between Capillary Flow Porometer Testing Services and Mercury Porosimetry

Capillary Flow Porometer Testing Services has revolutionized how mundane industrial tasks used to be performed by making them modern, efficient, and cost-effective. However, capillary flow porometry is not the only service that has helped achieve industrial efficiency.

Mercury porosimetry is another highly used method for determining sample calculations. Yet, as both of these testing services are so frequently used, it’s best if you know which one should you choose for your industry. So, today, let’s discuss the differences between the Capillary flow porometry and Mercury porosimetry so that you can gain vital knowledge about the two.

Mercury porosimetry vs. Capillary flow porometer Testing Services

1. Mercury Porosimetry

This pore analysis forms the base for evaluating many of the materials, including catalysts, construction materials, sediments, porous plastics, ceramic green bodies, and porous plastics. The unique thing about Mercury porosimetery is its capability of analyzing a wide range of pore sizes.

These sizes start from small 3nm ones and go all the way up to 950 µm. This enables the test to cater to both the macropore regions as well as the mesopore regions. Furthermore, pore volumes are determined and measured by recording the amount of mercury that has intruded into the pore system. Later, pore size distribution is derived from the pressure dependence of filled pore sizes.

2. Capillary flow porometry

Capillary Flow Porometer Testing Services utilizes a technique that’s based on displacing the wetting liquid from the sample pores by applying gas pressure. The measurements include minimum, maximum pore sizes, bubble point measurements, pore size distributions, and through-pores in membranes, paper, filtration, ceramic, hollow fibers, etc.

During the process of porometry process emptying the corresponding pores via gas pressure is necessary for evacuating the liquid from the most constricted sample parts. It’s a challenging task as the constricted parts offer the highest resistance to wetting liquid removal.

How the calculation works are, first, the gas pressure is increased at a continuous and constant rate. The pressure rate can be modified by the user according to their experimental requirements. Afterward, the gas flowing through the sample is measured.

This is an efficient and effective method for measuring valuable sample data, which can then be used for analytical or quality control purposes. It’s important to note that complex structures require a considerable amount of tortuosity towards the pressure as longer pore paths cannot be emptied at certain pressure values.

The diameter needs to be scanned before allowing the gas to flow and displace the liquid through longer pore lengths. Yet, the consequences of calculating these pore lengths at times lead to miscalculations and incorrect reporting.

How do these differ?

Both the Mercury porosimetry and Capillary Flow porometry have their differences when it comes down to industrial usage. For instance, Mercury porosimetry can measure some of the largest pore sizes, while porometry cannot. But porometry can calculate a variety of data that the mercury porosimetry is limited by.

Conclusion,

There is nothing in black and white here. Both of these tests are valuable with respect to their particular uses and calculations. However, one thing is certain, the measurement methods, stability tests, parameters, gases, and liquids used in these tests are certainly valuable for analytical and research purposes.

The overall procedural and operational efficiency that you can achieve by implementing these tests will promote further developments.