How to set analyticl specification for combination products?
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What is the difference between the working standard and reference standard?
why xterra column require to use at higher ph?
What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.
what is pKa ?
10 Answers Dr Reddys, Shasun Chemicals,
what is deference b/w the working standard and reference standard
when we have polar type of sample and solvnt hen which type of stationry phase we have to use
why the ph scale range is 1 t0 14 and why not beyond 14 and not to below 1?
5 Answers Avra, Granules, Orchid,
how to select short coloum and long coloumn for new molecule
how to calculate corelation coefficient in G.C Calibration? what is the calculation part?
In Related Substances Test how we can reside the limit of impurity ?
why we use only vanilline , acetanilide,& caffeine For the Calibration of melting point appartus?
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 ?