What is High Pressure liquid chromatography?

In the vast field of chemistry, chromatography is one of the most important and integral aspects of chemistry. Chromatography is often used as collective term to describe certain set of laboratory techniques that are used to separate mixtures. These particular techniques primarily operate on the principle of colour and its effect and reactions on light, heat or other chemical reactions. There are two types of processes in chromatography – analytical and preparative. In the analytical process, individuals or scientists primarily analyze the mixture and record the contents present in it, while, the preparative process primarily includes the separation procedure, where the scientist or individuals separate a mixture of elements from a compound. Chemistry has moved a long way from the time when scientists would require glass tubes and absorbents. Scientists can now effectively use advanced gadgets and receive digitalized results through the advancement of technology.

The High pressure liquid chromatograph (HPLC), which is also known as the high performance liquid chromatograph is one of the most important and widely used gadgets in chemistry. The primary purpose of this technique is to separate the mixtures and involves mobile stages in which the sample is mixed. The mixture is then packed with several types of absorbent stationary phases. The absorbents help the scientists to identify and separate the necessary elements and separate them from the remaining other elements.

There are many different types of HPLC techniques, however, the most popular technique is the paper chromatography technique. This particular technique is a part of the partition chromatography. In this technique, the scientist adds a droplet in the centre of a paper and then applies pressure on the paper. This helps to spread the contents on the sample and the sample is then cut out and separated from the corresponding solvents. In this technique, the scientist has to push the mobile phase of the process through the layers of the paper. The scientist needs to be careful with the pressure as if it is not calculated properly and the wrong pressure is applies then it could compromise the test and lead to a wastage of solvents.