What is multi-column chromatography?
Multi-column chromatography (MCC) splits the load zone into two columns in series, allowing for product breakthrough from the first column to be captured by a second column.
Why are longer columns better in separation?
Because the column does not contain any solid packing material, it takes less pressure to move the mobile phase through the column, allowing for much longer columns. The combination of a longer column and a smaller height for a theoretical plate increases the number of theoretical plates by approximately 100 ~.
How does Column length affect chromatography?
A longer column generally improves the separation. The trade-off is that the retention time increases proportionally to the column length and a significant peak broadening will be observed as well because of increased longitudinal diffusion inside the column.
How do you increase column efficiency in chromatography?
Another way to improve column efficiency is to elevate column temperature. Higher column temperatures reduce mobile phase viscosity and increase solvent diffusion rate, therefore increasing column efficiency.
What is a chromatography column made of?
Materials. Liquid chromatography: Traditional chromatography columns were made of glass. Modern columns are mostly made of borosilicate glass, acrylic glass or stainless steel. To prevent the stationary phase from leaking out of the column interior a polymer, stainless steel or ceramic net is usually applied.
Why Silica is used in HPLC column?
Generally, silica gel is filled in the high-performance liquid chromatography columns because of its particle size and porosity that helps in separation of components and silica gel is also an inert material that does not react with mobile phases.
Which type of column has the greater efficiency and resolution?
Cost. Packed columns are less expensive than capillary columns. However, in comparison to capillary columns these have lower resolution efficiencies and larger column bleed.
What are the advantages of continuous column chromatography?
Such a continuous chromatography exhibits significant advantages over the traditional single-column chromatography. YMC offers continuous LC systems both for lab-scale purification and for pilot/industrial-scale (GMP-compliant) purification.
What is multi-column chromatography (MCC)?
Multi-column chromatography (MCC) solutions, offer a number of advantages. For example, the first column in MCC has a greater binding capacity, reducing protein A resin requirements. And, with several columns operating in parallel, MCC enables manufacturers to explore continuous processing.
What is the difference between single column and multi-column batch chromatography?
In traditional single-column batch chromatography, there are inherent limitations because the system rarely uses the full capacity of the stationary phase during loading. In multi-column chromatography, the large column is split into a number of smaller columns that can be processed individually, eliminating idle zones.
Why choose a twin-column continuous chromatography system?
Our continuous chromatography systems have a simple configuration due to the twin-column switching, leading to easy understanding of the operational design. In addition, such twin-column systems allow easier maintenance than the triple- or more multi-column systems.