What is difference between Primary and secodary reference
standard?
Answer Posted / arnold
primary standard
| Is This Answer Correct ? | 7 Yes | 25 No |
Post New Answer View All Answers
Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?
In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )
Tell me something about Vitamin A test method by HPLC
mode of absorption in alimentary canal?
In which situation we require to analytical method validation of excipient?
What is similarity factor and its use in api strength?
why are measure gas flow " ml " in Gas chromatography
could negative ions be produced by bombardment process in mass spectrometry?
what is the extinction coefficient for Indomethacin or at 319nm wave length.
What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.
we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion
How we can identify process related and degradation impurity in single method with short period?
what is the principle involved in turbidometry and nephelometry ?
Why six unit used for precision?
How we choose the mobile phase for method development.?