why has inject 6 injection in Releted compounds

Answers were Sorted based on User's Feedback

why has inject 6 injection in Releted compounds..

Answer / ramakrishna- micro labs

In RS analysis we r analysed for impurity purpose,here we take
more concentration when compare to standard,that's why
standard area comes very less when compare to sample,so inject
standard 6 replicates the % RSD is NMT 5.0 , we give 5
replicates %RSD is NMT 2.0,the system suitability criteria
than more chances to pass for 6 replicates injections

Is This Answer Correct ?    5 Yes 3 No

why has inject 6 injection in Releted compounds..

Answer / laxman rapolu

In Related substances, we are preparing the standard in the
unknown impurity concentration level.This is the less
concentration.for consistency purpose we should
inject.Because we are quantifying impurities against diluted
standard.This is applicable to external standard method.

Is This Answer Correct ?    3 Yes 2 No

Post New Answer

More Analytical Chemistry Interview Questions

in loss on drying Why follows on constant weight not more than 0.5 mg, any region

1 Answers   Biocon,

What should be the calibration procedure for wavelength accuracy in case of HPLC?

4 Answers  

How to estimate potassium?

1 Answers  

What is void volume & dead volueme

3 Answers   Lupin, Bayer,

We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy

0 Answers  

what is deference b/w the working standard and reference standard

4 Answers  

Can we do the MC analysis of a sample which is not completely soluble in the medium choosed.

2 Answers  

what is different between volumetric solution and general solution

1 Answers  

How to use RF and rrf in Rs calculation( either multiply or divide)?

3 Answers   Micro Labs,

How to know the estimated LOQ concentration in ppm

0 Answers  

wat is reverse phase in hplc

2 Answers  

What are the parameters for the method development of Gas Chromatography and GC-HS? 

2 Answers  

  • Organic Chemistry Interview Questions Organic Chemistry (301)
  • Inorganic Chemistry Interview Questions Inorganic Chemistry (123)
  • Analytical Chemistry Interview Questions Analytical Chemistry (1252)
  • Physical Chemistry Interview Questions Physical Chemistry (62)
  • General Chemistry Interview Questions General Chemistry (478)
  • Chemistry AllOther Interview Questions Chemistry AllOther (189)