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In which situation we require to prepare the standard solution from sample in Related substance method?
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Do you have experience with organic extractions or tissue digestions?
Why we check moisture,ash & AIA in product
viod volume and dead time
water is more polar than acetonitrile.but in reverse phase chromatography peaks elute earlier when we increse Acetonitrile.what is the reason.
what is the principle involved in determination of moisture content?
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how can delete the impurity in 1-(2:6 dichloro phenyl)-2-indolenone.and desolving the impurity in which solvent but does not desolve product in solvent.
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
analytical method validation require to with respect to release specification or shelf life specification?
Why we compare unequal concentrated solutions in heavy metals test. For example comparing the test solution with 1 ppm lead standard and telling it's less than 20ppm?
1 Answers Micro Labs, Mistair,
In the isomers,enantiomers give the only physical properties present such that no chemical properties present.
if the flow rate is increases then any changes in retention time in hplc
Organic Chemistry 
