why we use only vanilline , acetanilide,& caffeine For the Calibration of melting point appartus?7 22186
which solvent is highest poler acetonitrile dimethyl formamide methanole tetrahydrofurane buffer solution8 9891
what is the difference betwen the analytical column & peparative column?4 10947
what is the general mechanism of high performance liqiud chromatography?7 13151
why 2Theta value is consider in the XRPD spectra and how to consider the 2 Theta value2 5983
what does optical rotation and specific rotataion means,difference between them8 26890
i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me1516
In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?
What is importance of pH in the Heavy metal test and How it effect on the test results?
calibrtion procedue of LC-MS
Why Ethanol is Used for Standardization of GC Head space?
Why sodium hydroxide used for maintain pH of phosphate buffer
How to determine the EDTA content by potentiometry titration in Ceftriaxine sodium
What are modes of quantification in related substances
why we are using benzene, anyline in acetic anhdride assay titration method?
In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.
what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.
What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.
Principle of single pan analytical balance
mode of absorption in alimentary canal?
mahagenco syllabus for the post of chemist
in sampling of raw material which side is pasted sampled labels