Why sodium lamp is used as source of Polarimeter?
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to get desired wavelength
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some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?
Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?
what are the standard methods for HPLC?
what is the difference between potentiometric titration and karl fischer titration?
if your impurity coeluting with each other in that situation how require to set specification? is it acceptable?
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what is mean by covalidation
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why cone formation during dissolution?
How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?