What is the diference between residual solvents and organic volatile matter661
How to decide the standard concentration for related substances hplc method1 997
Why we have to use KBr pellet technology ?1 905
USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...531
is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth554
What is the difference between qualitative and quantitative analysis (hplc)1 1145
How NMR spectra can be calibrated in presence or absence of TMS?1 860
What is Band broading effect explain539
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 reasion455
how the compound separate in coulunm,explain
What is the acceptance criteria for moisture balance when calibrated with sodium sulfate
why are measure gas flow " ml " in Gas chromatography
Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.
How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?
What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.
what type of questions asked on analytical balance and also give answers................all pharma companies?
What is the difference between spectro meter and spectro photo meter?
Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?
what is the extinction coefficient for Indomethacin or at 319nm wave length.
In performance Check of GC Why Hexadecane Peak is Considered
How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.
please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development
WHAT IS THE USE OF STARTER ?????????
2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.