Answer / skreddy

caffin and benzophenones are thae primary standards and
they are having uv value at 254 nm. ben.phe gives 4 isomers
at 254 nm that will not changed at any conditions.

Which is the highly polar and highly non polar column in HPLC?

0 Answers  

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why we calibrate ph meter and balance daily.....but hplc and uv requires quaterly?

5 Answers   Apotex, UPL,

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what is method development parameter in HPLC method development

6 Answers   GVK,

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when we use pda detector in hplc instead of uv detector

6 Answers   Hetero,

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How to estimate potassium?

1 Answers  

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various methos to calculate precision in validation methods in HPLC?

2 Answers  

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in which situation ion pair require to use?

0 Answers  

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What is the principle of Thermal conductivity detector and FID?

0 Answers   Cipla,

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How much area of methanol or other solvent are acceptable in blank (Diluent) of Gas chromatography.

2 Answers  

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Is it required to inject 6 injections for % RSD of a system suitability in lc or gc

3 Answers   Raks Pharma,

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1)why use benzophenon,uracil in hplc calibration. 2)why use sucrose in polarimeter calibration. 3)what is S/N ratio, noise and drift in hplc 4)how we can find lod and loq in method validation

1 Answers  

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In lcms analysis some times we get sodium and potassium adducts. if the compound is havine sodium ions how can we confirm wether sodium is from sample or it is a adduct?

2 Answers   Teva Pharmaceuticals,

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