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Answer Posted / nisha
we show negative peak because of impurites
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Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?
in OSD forms require to use gas chromatography?
what is mean by nitrosamine impurities?
what are the standard methods for HPLC?
in which situation require to change rs specification?
In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )
what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?
why octanol used to determine the partition coefficient ?
why we use a particular hplc column for a particular compound give reasons?please
Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?
in which situation ion pair agent require to use?
when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.
How you develop a method in HPLC?
Why irmoisture balance is used for corrugated box moisture testing
For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?
