1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer
1263My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards
1077We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy
1275Post New Analytical Chemistry Questions
WHY given much noise PDA dector then VWD Dector
in gas chromatography what is the difference between gas flow rate and average linear velocity ?
why salisylic acid not using now days for disdolution calibration?
Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?
We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy
how require to fix the linearity and accuracy cincentration range?
In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.
What is importance of pH in the Heavy metal test and How it effect on the test results?
Which parameters require to do in tech transfer?
Why potassium dichromate is used in calibration of uv?
How do we fix the sample concentaryion in hplc method development. What is the basis?
What is split ratio in Gc? Splitless? how requirr to select?
In Assy by potentio metry titration method how select MET U ,DET U, SET U,
What is shaking level in GC?
Why sodium hydroxide used for maintain pH of phosphate buffer