What should be the level/ Percentage of Arsenic in Arsenic free zinc.

1756

how many types of balance calibration test?

1720

Which parameter require to do for analytical method equivalency?

319

which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc

1723

why cone formation during dissolution?

314

Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?

2271

For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

1786

How to set specification of assay, fisdolution and related substances?

358

4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

2150

why octanol used to determine the partition coefficient ?

1916

I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?

2971

if content uniformity passing but dissolution varrying then what is next step?

383

can i use hplc detector to uplc and why?

1805

WHY given much noise PDA dector then VWD Dector

1496

in which situation ion pair require to use?

277