Answer Posted / nagoor meravali

Calibrations buffer pH range 0-14.If the drug choose in
acetic nature so the calibrated pH range 1.68 to 4.00
buffer.If the drug choose in alkali nature the calibrated
pH range 9.2 to 12.45. If the drug choose nutral range the
calibrated pH range 6.86 to 7.0 analysis range i.e.
minimum to minimum and higher to higher
( 1.68-12.45)

if instrument calibration fails then what require to do?

965

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how to select short coloum and long coloumn for new molecule

2421

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how you establish the LOQ?

765

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how to calibrate hplc & gc

4489

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which are the sizes of capsules?

943

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What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.

2664

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in dissolution why pool sample needed? in which type of drug pool sample need?

3165

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What is the purpose of octyl silane columns?

4280

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My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

1580

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Basic principle of ESI?

2132

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How to start the dissolution development for unknown tab?

1669

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Please give idea about method development for cleaning method and how maco level establish

729

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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.

2028

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Loss of linearity in tkn analysis, possible reasons?

1308

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Related substance method equivalency on control sample or spiked sample?

751

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