Answer Posted / kamil hassan

limitation of uv visible spectrometer from 200 nm to 800 nm range. 200 to 400nm uv wavelength & 400 to 800 in visible Wavelength '
water we used as a solver in spectrometer because its absorb on only 165 nm (vacuum uv range) so why we used deionized water as a Blank.

In HPLC (Waters) software Empower1,2 &3 what is the updation for each version

2961

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why require the ph, buffer during hplc mobile phase?

820

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

709

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how require to interprit the method precision data of hptlc?

761

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As per ICH related substances stability trend limit from initial to shelf life

3189

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How to do regeneration of Metacarb Pb plus column?

2515

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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

799

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why we use glass fiber filters use in some situation?

738

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how require to set assay concentration for standard and sample?

866

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

7477

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If vendor having more imp than monograph then how to proceed? and how to set spec?

848

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EXPLAIN THE CALCULATION PART OF AN KF TITRATOR CALIBRATION WITH SUITABLE EXAMPLE

2576

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If we have 5 strength which is not dose proportinate and excipients also diffrent in each strength then how we can proceed for Force degradation? and excipient are same but not dose propotinate the how FD?

761

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if instrument calibration fails then what require to do?

898

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In the isomers,enantiomers give the only physical properties present such that no chemical properties present.

2177

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