Tag Archives: Chromatography

High importance for Downstream processing in pharmaceutical industry

Development and cell community operations possess all things considered a comparable stage space in the typical bio-producing office.

Ten circumstances expansions in the protein, that biotech has perceived over the navigating of about 15 years, filters the downstream output stream controller.  The outcome has implied the necessity to stage sanitization of the technique stream through various rounds for some system operations, that requires the thing sufficiently proceeding in the inner-system pools holding the running with a sequence of a procedure.

Chromatography strikes with high protein motivations behind authority have decreased zone sizes moreover in system pool volumes. Further vanguard resins which issue or gets around 80 milligrams for every liter of sorbent possess supplanted media including reasons for suppression up to 30 mg/ml per go.

particularly in association

The centrifugation produces nourish streams because this requires all the additionally tidying showed up particularly in association with streams controlled to micro-filtration, that builds up the basic for a very high-oblige immensity ways of downstream processing wander.

Downstream processing recommends recuperation in addition to cleaning of biosynthetic things, particularly pharmaceuticals, that are from normal sources, for example, animal or the plant tissue or advancement stock, including the reusing of salvageable parts and a perfect treatment and trade of scrap.

This is an important stroll in the social occasion of pharmaceuticals, for example, unfriendly to sickness experts, hormones, antibodies and immunizations; antibodies and driving forces utilized as a few diagnostics; mechanical proteins; and typical smell and taste mixes. The downstream processing really is viewed as a particular track in biochemical arranging, be that as it may, an extensive number of key movements were made by physicists and analysts for research center scale division of regular things.

We also offer a degree of movement mechanical gatherings, underpins, CIP approaches, stainless and also single-use frameworks, combined headways and additionally affirmation associations. Solidified with in-house application stars who have various years of limit, we could assist you to handle all downstream processing challenges.

Types of chromatography

Types of chromatography is a wide aspect on its own. This is because the types are arrived at depending on a couple of factors among them the technique employed, the physical characteristics of the mixtures/ components and others. In light of all the factors put in to consideration, we can say we have around 12 types of chromatography.

What are the types of chromatography?

Below are the 12 types of chromatography with a little explanation of each type:

  • High performance liquid chromatography- this type applies the principle of surface area to volume ratio. The mobile phase is pumped into the column at a pre-set pressure. The column particles are very small increasing the surface area to volume ratio hence better separation takes place
  • Gas chromatography- as the name suggests, this type has a particular interest in gas. This is because it uses gas for the mobile phase. The gas used has to be pure i.e. doesn’t have any impurities.
  • Ion- exchange chromatography- this type is dependent on the charge of ions in the mobile phase. Ions in the sample with the same charge will be eluted as like charges repel
  • Size exclusion chromatography- this method works around the size of particles in the component. The largest particles are eluted first and the smaller ones follow
  • Thin layer chromatography- like the name, this type has the stationary phase as a thin layer
  • Paper chromatography- here, we use a rectangular or circular paper as the column.
  • Affinity chromatography
  • Liquid chromatography combined with mass spectroscopy
  • Gas chromatography combined with mass spectroscopy
  • Ultra high performance chromatograph
  • High performance thin layer chromatography- a more efficient type of TLC
  • Column chromatography- the mobile phase is poured through a column that in turn allows separation of the sample

Chromatography and its abundant uses

Chromatography may not seem interesting for people who are away from the sciences world. This process affects daily lives in many ways. It is useful to separate a compound into various components. Chromatography plays a crucial role in the forensics, athlete testing, food regulation and also in favorite alcoholic drinks control.


Chromatography everyday uses

  • If you are into Law and Order and CSI programs, it is helpful for the investigation of criminal cases.  It helps in analysis of cloth or blood samples, blood testing, arson verification, etc. This process helps in determining alcohol, poisonous substances or drugs levels in the body.
  • Chromatography offers accuracy and precision as it can identify substances that are in the bloodstream.  Thus it is valuable for doping testing or even to check the drugs in athletes that enhance performance.
  • Chromatography can trace meat as well. The efficacy in the food is of immense use in analyzing.


Ebola Immunization


Specializing in variety of flippant matters such as the alcohol quality is one of the best benefits of chromatography as it helps saving millions of lives and is truly helpful. Ebola virus, the deadly one claimed more than 5000 lives from the last year after its outbreak and caused panic everywhere, especially in Guinea, Sierra Leone and Liberia, to places it is largely confined.
The scientists keep on making attempts to fight off the disease, but only chromatography has shown itself that it is incredibly useful in identifying the antibodies that are more effective and helps in neutralizing Ebola. There are no drugs that are validated as yet conclusively, thus it was the key factor in the development of this experimental immunization Zmapp. Nevertheless, it is expected to continue in the ongoing research to be used so that chromatography helps in determining the actual reason.

Techniques Employed In Chromatography

The separation of mixtures using chromatography is different in every type of chromatography. This is because different mixtures are made of components that are of different characteristics. Some mixtures are made of gases while others are made of liquids. For this reason, the type of chromatography will be different in different cases.

The techniques employed are however similar across all the types. This is mainly because the different types are all based on the same principles. The objective is also the same as they all seek to separate individual components.

The techniques of chromatography are as follows:-

  • Stationary phase- as the name suggests, the phase is motionless and allows the sample to move over it. It can either be in solid or liquid state. If in solid state, it is important for the particles to be uniform in size and shape. When the phase is liquid, it has to be spread uniformly across a solid background.
  • Mobile phase- this is what aids the mixture in question to move across the stationary/ motionless phase. It is either liquid or in gaseous state to ensure movement. It must always be opposite in polarity to the stationary phase. This means if the stationary phase is polar, the mobile phase should be non- polar and vice versa. It should also be pure
  • Flow rate- the rate at which the mobile phase flows over the stationary phase should always be kept constant. This ensures reliable results
  • Temperature- temperature should be constant to ensure it doesn’t alter the flow rate. High flow rate leads to faster separation but colour bands can be very close.
  • Treating of the sample- some samples need to be treated to ease separation. This is basically the chemical alteration of a sample before or after it is separated.

How Chromatography came into existence?

Chromatography is a versatile strategy for separating a wide range of chemical mixtures.

In the mid 1900s, Mikhail Tswett, a Russian botanist took keen interest in individual chemical

compounds found in plants. He noticed that removing ground-up plant material extracts with various

solvents delivered diverse shaded solutions. One of his trials included pouring a plant extricate through a

glass tube stuffed with powdered calcium carbonate. As the fluid went by the solid powder, different

bands of colors showed up; these were the different compounds, separated from each other by the mere

interaction of the solid and the fluid extract. By this, he had invented Chromatography, the word which

was drived from Graphe means writing and Chroma means color.

From that point forward, chromatography has turned into a foundation of separation science, that branch

of science dedicated to separate compounds from mixtures. There are two principle classes of

Chromatography: Analytical and preparative.

 Analytical work utilizes little specimen sizes; the goal is to separate mixes so as to distinguish


 Preparative work utilizes huge amounts of tests and gathers the yield in mass; the purpose of the

Chromatography here is to expel polluting influences from a business item.

In any chromatographic strategy, a stationary stage more often than not a strong, thick fluid, or reinforced

covering that stays settled in one spot, and a versatile stage oreluent (normally a fluid or gas) travels

through it or crosswise over it.

An example to be isolated, when set on the stationary stage, will slowly move along in the same bearing

as the versatile stage. On the off chance that a specimen compound (or analyte) has no cooperation with

the stationary stage, it will run directly through and leave the framework (elute) at the same rate as the

versatile stage. Then again, if an analyte has no cooperation with the portable stage, it will stick

straightforwardly to the stationary stage and never elute. Neither of these are great results.

Evolution Of Gas Chromatography

When Martin and Synge spearheaded the evolution of gas chromatography, they proposed that it was

important to analyze chromatograms using the gas-liquid partition. This was as a result of a research they

had carried out that led them to believe that vapor would be more effective during the mobile phase of the

liquid-liquid partition.

Uses of Gas chromatography

 Experimenting for substance purity

 Component separation and quantity determination

 Compound identification

Gas chromatography takes place when samples are injected through chromatographic heads in vapor

form. Through inert flow, the gasses go through a column in the gaseous state. In this case, a carrier gas is

a mobile phase. At the stationary state, the column contains liquid. This liquid is what gets adsorbed at the

inert solid exterior.

Carrier gasses are chosen according to the types of detectors to be used. The most used gasses include;

Carbon dioxide, helium, argon, and nitrogen. There is a need to consider using the correct quantity

samples in the columns. For the process to be effective, the process should be carried on with utmost care

and consideration to all factors. Injecting samples in a slow speed, for example, is bound to lead to

resolution loss.

The temperature should be at the recommended 50 degrees centigrade or dependent on the volatile

component's boiling point.

Gas chromatography involves the use of detectors which come in different groups namely; flame

ionization, thermal conductivity detector, electron capture detector, and nitrogen- phosphorus detector

among others. These are further broken down as follows; the selective and non-selective detectors,

specific and concentration dependant reactors, and mass flow dependant reactors. Choosing one over the

other results to divergent selectivity types.

While non-selective detectors acknowledge all compounds with an exception of gas, selective detectors

acknowledges compounds which share common physical and chemical properties. Specific reactors, on

the other hand, acknowledge only one chemical compound.