Answer Posted / jyothi

gas flow rate
carrier gas flow rate
detector gas
oven calibration
detector calibration
these above all calibration parameters in gas
chromatography.

how to select short coloum and long coloumn for new molecule

2522

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2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.

2259

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Basic principle of ESI?

2203

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how you determine moist.of NaOH sol or NaOH flacks

2263

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identification is for unknown? qualification for known? reporting for LOQ?

775

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If change in specification which parameter require to do for validation? if change in chromtographic condition then which parameter? if api change then which parameter? if change composition then which parameter? if old method not work out then whicj parameter? if additional one impurity added then which parameter of validation require to do on above each conditions? elaborate separately

903

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why multimedia dissolution require to do?

863

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How do we fix the sample concentaryion in hplc method development?

1185

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What is column in chromatography?

2289

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How will u perform degradation study in detectors other thann PDA in HPLC Methodology

2597

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Why we select scan range from higer wavelength to lower wavelength in uv visible spectroscopy and ftir spectroscopy ? .

978

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What is similarity factor?

1257

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How require to perform linearity as per ANVISA? What are the acceptance criteria?

1398

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If inhouse hplc related substance method is completly diffrent from Usp for finished proďuct with diffrent impurities then how require to prove method equivalecy?

816

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What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

7595

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