Answer Posted / m. balaram naidu

MAINLY GC IN USED THERMALLY STABLE COMPOUNDS (NON VOLATILE
COMPOUNDS)

MAINLY GC TEST TO IDENTIFIED ORGANIC SOLVENTS

Difference between the quantitative analysis and qualitative analysis?

1184

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Basic principle of ESI?

2154

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Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

1696

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which situation gc hs and gc als require to use?

794

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if identification threshold crosses the limits then what next step?

870

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what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means

1977

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Which are the diffrent grades of api in pharma?

778

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what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me

2686

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In IR spectra, generally a molecule vibrates without apply emr or ir light?

1985

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how you fix the limits of impurities?

837

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sop of a uv visible spectrophotometer double beam elico model

5929

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in gas chromatography what is the difference between gas flow rate and average linear velocity ?

2608

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If suppose 10 methods of dissolution given in pharmacopoeial for single content product then which method out of 10? or all 10 require to follow?

996

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My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

1601

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

3034

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