Answer Posted / pankaj shrivastava

There are some factors and parameters by which we can
decrease the run time as....
1. by increasing flow Rate
2. by increasing lightly Column oven temperature.
3. by increasing mobile phase strength.
3. by using short length column.

how can I make the copper get white bye any salt or acit?

1665

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Identify problem faced when mass spectroscopy is used with HPLC system ?

1380

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Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.

2391

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What is intact assay method development.....?

2006

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how to set sample and standard concentration in RS method?

363

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We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy

1319

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when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.

1522

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What is the difference between chromatographic purity and related substances?

787

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how you start RS method development when for new product?

290

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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?

1453

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what is classification of elemental impurities? what is risk assement in elemental impurities?

343

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Ph meter can show more than 14 ph reading? Why ph range in between 1 to 14 only?

303

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how to calculate elemental impurities?

547

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How to start the dissolution development for unknown tab?

1148

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What if impurity area in control sample coming more as compared to LOQ level of impurity ?

1146

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