Interested to Buy Any Domain ? << Click Here >> for more details...
What is difference between Primary and secodary reference
standard?
- 2 Answers
- 19638 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / narasimha murthy
A primary standard is a reagent that is extremely pure,
stable, has no waters of hydration, and has a high
molecular weight
A secondary standard is a standard that is prepared in the
laboratory for a specific analysis. It is usually
standardized against a primary standard.
| Is This Answer Correct ? | 52 Yes | 7 No |
WHAT IS THE PARAMETER FOR THE SELECTION OF MOBILE PHASE IN HPLC?
WHY POTASSIUM HYDROGEN PTHALATE IS USED FOR PERCHLORIC ACID? What is difference btw UV detector & RID detector? what is dissolution? What is unit of KF? what is the significant of pH in HPlc?
If inhouse hplc related substance method is completly diffrent from Usp for finished proďuct with diffrent impurities then how require to prove method equivalecy?
what is the difference between melting range & melting point? Which is more significant?
how can standardized of HCl of 0.1 N
what is diffrence between Specific optical rotation, optical rotation?
How require to develop GC method? how to select diluent, GAS, column selection and other chromatographic conditions?
what is concentration of oxygen in U.H.P. grade N2 cylinder
How can we detect a compound in hplc which does not have any chromofore?
principle of FTIR
why water, methanol, ethanol ets solvents are used in UV SPECTRIPHOTOMETER for blank reading ?
what is the difference between hplc and uplc?
5 Answers Fresenius Kabi, Mylan,
Organic Chemistry 
