Introduction to surface area and pore size analysis

If you have not been working in a laboratory, then the chances are that you are not familiar with what surface area analysis and pore size measurement is. Just for your knowledge, it is a method that is used for determining the physical absorption of liquid, gas or solid molecules, with the convenience of being able to measure the porosity as well. An examination of this kind provides a great deal of information concerning the features of solid materials, more precisely, of their behaviour. By features, it should be understood reactivity, catalysis, separation, and dissolution. It is only normal to want to know why it is necessary in the first place to understand characterize surface. Taking into account that surface area has a direct impact on the dissolution rates of products, like pharmaceuticals, it is essential to know things about the surface area and pore size in order to better take advantage of the surface in specific applications. Surface area and pore size analysis is therefore necessary.

There is a close connection between the surface area and pore diameter. Particles that present smaller holes have a singular surface area. The number of pores can be either small or big. It must be noted that errors are likely to occur when making measurements. Before taking action, it is important to clear away contaminants like water and oil. The reason for this is that they affect the results of the examination. The efficiency and reliability of the particle size analysis methods depends a lot on the condition of the surface. When the sample is perfectly clean, they can be analysed. The technology that is commonly used in laboratories like escubed is gas absorption technology. What happens is that gas, such as liquid nitrogen is placed onto a solid material. A gas sorption process takes place and it is the job of the specialists to oversee this process. The method implying the use of liquid nitrogen is efficient in the sense that it identifies the complete surface area of the atoms.

It is important to make mention of the fact that there are limitations.  In the event that the sample is too big or the material does not provide enough surface area, then the results are not reliable.  Generally speaking, surface area and pore size analysis are used in pharmaceutical applications, although it is not uncommon to be utilized for paints and cosmetics. In manufacturing, information of this kind is essential. For someone who is a beginner in the field, all the things mentioned earlier may seem frightening. The matter of the fact is that porous material characterization is not as complicated as it may sound. People who need to know all about surface area and pore size should refer to a specialized laboratory. Laboratories have special equipment, being able to offer reliable results. They can produce results via the classic or modern methods. The main idea is that the work should be undertaken by qualified professionals. It is also possible to approach a chemistry research centre.