Qc interview questions

1247

how you confirm the assay method?

281

How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample

2524

What is shaking level in GC?

325

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?

2969

is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

1654

What is the use of tlc and hplc? And when and where use?

657

What is the difference between spectro meter and spectro photo meter?

10405

what is procedure of actual procedure for registration of drug?

1450

we can use expired sample for validation and analyst qualification?

292

why we should take dst factor for below 1%moisture samples

2190

What is the calibration of uv process and preparation

1494

how to develop the icp ms method? Application of icp ms?

307

what is mean by dissolution biowaiver study?

321

How to fix the sample conc. in Related substances test by HPLC?

605