Answer Posted / kanakadurga

A solution of 0.005M H2SO4provides ionic strength to the
solution (hence, it changes the refractive index so as to be
similar to comparable solutions), but it doesn't absorb much
in the UV or Visible region. Therefore, light hitting the
detector will be almost all stray light.

Caffine is primary standard and Shows maxima at two
different wavelength ie.205nm & 273nm and Cheap & easily
available

if peak get problamatic then what require to do?

805

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How to set specification of assay, fisdolution and related substances?

883

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WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?

2578

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acceptance criteria for lod & loq by standard deviation of response and slope??

2592

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for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol

6071

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How we choose the mobile phase for method development.?

1213

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why cone formation during dissolution?

787

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what are the standard methods for HPLC?

2786

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What is the formula for relative diffrence for standard solution in solution stability in validation?

802

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How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?

3864

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how you start the solubility study?

827

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if content uniformity passing but dissolution varrying then what is next step?

878

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Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

2833

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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.

2042

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For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

2314

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