Answer Posted / vaibhav goswami

to check the wavelength accuracy of uv

why holium oxide prepared in 10% HCLO4 SOLUTION

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if you have given a blank water how you analyse by general analytical techniques?

2083

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what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?

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Why to use propyl paraben in HPLC gradient calibration

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How to decide assay range for non pharmacopeial API analysis by HPLC? Could you give me any reference for same e.g Guidelines or Paper publications?

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For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?

1964

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How we choose the mobile phase for method development.?

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what is the structure of DOWEX-50

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in DMF having extra impurities and in api COA also having extra imp than USP or BP product then how require to proceed?

887

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if tech transfer fails whay require to do?

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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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if your product is soluble in 0.1n hcl and water then which you choose as media from these 2 media?

735

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What is intact assay method development.....?

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we can use expired sample for validation and analyst qualification?

862

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what is the principle of UV Vis spectroscopy, AAS, ICP OES,ICPAES, ICP-MS and FTIR

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