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what is internal standard define
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Answer / ankit
Internal standard are used for sutability purpose, we measured the retaintion time of main component corresponding to it.
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Answer / usha kiran
internal standard is a known concentration of a substance
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Who discovered X-ray
2 Answers Huntsman Corporation,
What does theoretical plates number mean?
If mass balance is not passing in forced degradation in method validation that method is suitable or not?
1 Answers Aurobindo, Dr Reddys, Reddy Labs, Wockhardt,
why we are taking 85 ml of concentrated HCl to prepare 1N Solution
what is motor rotation in case of sucrose
how you confirm the assay method?
Why Methanol used in KF Titration?
Why we are use 0.005M Sulphuric acid, in control of absorbance performance test UV Spectrophotometer calibration
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
how you establish the LOQ?
why the sucrose used in calibration of polarimeter
pharma industries oriented
0 Answers Apex, Micro Labs, Zydus Cadila,
Organic Chemistry 
