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HPLC works when a reservoir holds the solvent and then it is sent to the pump manager.Next it goes to the HPLC coloumn .After it goes through there it usually ends in the detector than waste. Generally the stationary phase in the HPLC column is made up of alkyl coated silica making it relatively non-polar. Due to this the technique is also called reversed-phase HPLC.

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How do you distinguised np-hplc and rp-hplc?

NP-HPLC is "Normal Phase" HPLC, wherein the solvents used are less polar than the substrate in the HPLC column (e.g. using hexane or dichloromethane with a silica HPLC column). RP-HPLC is "Reverse-Phase" HPLC, wherein the solvents used are more polar than the substrate in the HPLC column (e.g. using Water and Methanol with a octadecylsilane (ODS or C18) column).


Retention time calculation for hplc?

why RT was shifting & how to RT calculation in HPLC


What type of species can be separated by HPLC but not by gas liquid chromatography?

mixture of enantiomers can be separated by HPLC


What is rs-hplc?

"RS-HPLC method" means "Related Substance HPLC Method".


Where can one purchase HPLC detectors?

You can purchase used HPLC detectors and other equipment from the usedhplc website or from the ebay bidding website. Alternatively you can buy HPLC detectors from the equipnet website.


What is RRT and RRF in hplc?

In HPLC RRT means Relative Retention Time and RRF is Relative Response Factor


What is dead volume HPLC?

The dead volume in HPLC is 137.45. The dead volume in science is used in retention measurements and also in thermodynamic studies and the abbreviation HPLC stands for High Pressure Liquid Chromatography.


What are the key differences between normal phase HPLC and reverse phase HPLC in terms of their separation mechanisms and applications?

Normal phase HPLC separates compounds based on their polarity, with the stationary phase being polar and the mobile phase being nonpolar. Reverse phase HPLC separates compounds based on their hydrophobicity, with the stationary phase being nonpolar and the mobile phase being polar. Normal phase HPLC is typically used for separating polar compounds, while reverse phase HPLC is used for separating nonpolar compounds.


Can melamine detect by HPLC?

Yes, melamine can be detected by HPLC (High Performance Liquid Chromatography). HPLC is a common analytical technique used to separate and quantify compounds in a mixture, including melamine. Detection methods such as UV-Vis spectroscopy or mass spectrometry can be used in conjunction with HPLC to identify and quantify melamine accurately.


What is an HPLC column?

HPLC Column is one type of tube containing a stationary phase react with mobile phase to detect peak


Why volatile compounds are analysed in gc but not in hplc?

GC can give very resolved sharp peaks with short run time compared to hplc. additionally, there is less compatibility issue in setting an MS up to a GC than HPLC


Which one is advanced gc or hplc?

HPLC (High-performance liquid chromatography) is generally considered more advanced than GC (Gas chromatography) due to its broader application range, higher sensitivity, and ability to separate a wider range of compounds. HPLC is often preferred for analyzing complex mixtures and compounds that are not volatile.