Answer / ravi narwade

It is the peak due to void volume.

why we use deturium lamp in uv spctrophotometer other than lamps

1 Answers  

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stability study is going on up to 3years for famotidine-USP but the pharmacopeia is revised and tlc test is replaced with hplc test. At the 4th year frequency the product is failed in hplc test .how can i assain the expiry or retest date and can i stop or continue the programme?

2 Answers   Nakoda Chemicals,

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why the same column give different retention time in hplc?

7 Answers  

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How to determine water content of thioanisole? which interfere by KF titration?

1 Answers  

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What are the concentration limit for class-1 residual solvents in ICH ?

1 Answers   Lupin,

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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

0 Answers  

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Column selection in HPLC method development?

1 Answers  

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how pyridine can be analysed other than GC?

1 Answers  

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why 0.02% solution toluene &noHexane using in uv calibration?

1 Answers   Graviti Pharmaceuticals, Orbit Pharma, Ranbaxy, Vimta Labs,

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how you fix the limits of impurities?

0 Answers  

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Generally for Normal Phase HPLC,stationary phase is Polar.In place of polar if we take non-polar means what happened & why?

7 Answers   Macleods,

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What is oot in Stability analysis? (example)

2 Answers   Indoco Remedies,

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