what is a differance between assay by HPLC and assay by titration?5 18871
what is PH of 0.1N Hcl, 0.01N Hcl & Mehanol.3 38320
HOW RRF IS CALCULATED IN HPLC2 8435
why should we do limit of stray light in UV calibration and why should use potassium chloride2 22644
what is %labelled amount in content uniformity of dosage unit and its calculation?3393
how to prepare 5normality of hcl2 36560
diference b/w packed &capilary columns2 5204
How to estimate potassium?
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?
Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?
what is the principle involved in turbidometry and nephelometry ?
please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development
4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations
WHAT IS THE USE OF STARTER ?????????
My 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
Why Ethanol is Used for Standardization of GC Head space?
Explain the relations between number of carbon atoms in alkanes and retention time ?
what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?
What is diffrence between extractable volume and deliverable volume? Answer pls
What are the primary considerations in extractables and Leachables ?
what is peak purity and its formula
what is the origin to prepare standard operating procedure