Answer Posted / ajinkya p.

In pda detector light from UV & D2 both combination first passes from flow cell & then grating so we get array of light so we check absorption for each wavelength And also facility to calculate peak purity ( if there any hidden peak behind the interested peak)because pda has 3D view. In UV detector light from uv first fall grating & then flow cell, and we can put only known single or double wavelength at a time to analysis. this is the diff. between pda & uv detector.

if you get peak in blank then what require to do?

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In the HPLC Calibration done wavelength accuracy done between 200nm-280nm .but not done remaining 300-400nm not done ?

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could negative ions be produced by bombardment process in mass spectrometry?

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how require to set assay concentration for standard and sample?

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[3/30, 13:29] Manoj P Venkatpurwar: How hplc column selection according to structure? How mobile phase buffer selection on molecule structure?

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what is mean by nitrosamine impurities?

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What is split ratio in Gc? Splitless? how requirr to select?

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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?

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HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.

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what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?

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can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?

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Why six unit used for precision?

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why require to do water content for drug product?

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Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?

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using gradient pressure in gas chromatography are not ?using gradient pressure why

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