Answer / tushar

because in residue on ignition we find out related
Substances (inorganic element like As , Pb etc) in muffle
furnace at 600-650 degree temperature in this condition all
residual solvent vapourized and only inorganic element
remains . refer USP METHOD-II

Answer / shivaji

For determination of inorganic ipurities.

Why we more noise in PDA detector compared to UV detector?

1 Answers   Aurobindo,

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what is GLP? Which industries it requried?

1 Answers   Aurobindo, AXIS Clinicals, GVK,

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tell me about aliphatic acid estimation by hplc which columns can we use

1 Answers   Dr Reddys,

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Why forced degradation studies are performed in hplc method validation?

6 Answers   Apex,

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What is the pH of water?

1 Answers   Zydus Cadila,

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HOW TO CALCULATE THE MASS OF UNKNOWN IMPURITY IN LC-MS? AND WHAT IS THE ROLE OF FRAGMENTATION IN LC-MS ?

1 Answers  

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if partition coefficient value was positive means, what it indicates ?

1 Answers  

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what is peak purity? how may types of methods to determine peak purity?

3 Answers   Mylan,

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In HPLC Chromatographic separation Resolution equation is Rs = 1.18 (tR2 –tR1)/wh1+Wh2, Where, tR2 and tR1 is run time of eluent ratios of the distances from the point of application to the centers of the spots and the distance travelled by the solvent front from the point of application (retardation factor), and Wh1and Wh2 , is peak width of at half height. What is 1.18 ?

1 Answers  

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Why Peak Purity is not determined in GC analysis?

1 Answers   GSFC, GVK,

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What is the calibration of uv process and preparation

0 Answers   Aurobindo,

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What is heavy water

3 Answers   Meghmani Organics,

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