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.1521
If i performing one analysis on C8column then the same analysis done on C18 column then what will happen about Rt;Resulution;Peak shape Explain ?1 5266
why using Potentometry What Purpose? differance between manual and potentiometry? why using Some of materials in usig potentiometry? What is use of mericuric acetate in Potentiometry1 2842
iam using ph instrument lab india make.3ponit and 5point.in calibration time 3point slope will come 98.89and 96.87.that limit is 85 to 105.what basis slope will come.any calucalation between them.5point wiicome slope 99.89?why 3p0int came 2 values1 2861
when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.
use of stry light1 4629
when we have polar type of sample and solvnt hen which type of stationry phase we have to use3 3980
what is motor rotation in case of sucrose1 1623
why equlirium conatant of water have 14 value838
How to determine water content of bis tetrazole amine mono ammonium salt
why equlirium conatant of water have 14 value
In HPLC (Waters) software Empower1,2 &3 what is the updation for each version
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
What is importance of pH in the Heavy metal test and How it effect on the test results?
if you have given a blank water how you analyse by general analytical techniques?
What is stray light in uv what are units for stray light
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
is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth
what type of question will ask in the interview of lab chemist.
AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?
using gradient pressure in gas chromatography are not ?using gradient pressure why
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?
Did anybody have method for acetyl cysteine effervescnce tablet
Qc interview questions