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WHY POTASSIUM HYDROGEN PTHALATE IS USED FOR PERCHLORIC ACID? What is difference btw UV detector & RID detector? what is dissolution? What is unit of KF? what is the significant of pH in HPlc?
1 10085what is dissolution What is unit of KF? what is the significant of pH in HPlc? WHY POTASSIUM HYDROGEN PTHALATE IS USED FOR PERCHLORIC ACID? What is difference btw UV detector & RID detector?
1 8243Practically why we get negative absorption in UV SPECTROPHOTOMETER when the time of cleaning sample analysis. is negative absorption in Uv valid or not?
2455I 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?
3588In 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.
3193Why d-blo Ick elements are called outer while f-block elements called inner transition elements
1 4414If 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 8194
Active Ingredients in septilin ??
What is the diffrence in japan mkt requirement in analytical method validation over US?
chlorination of methane is possible and a mixture of products are obtained. Is flourination and Bromination of methane is possible?
hi i am siva icompleted m,sc in organic chemistry in 2008&working as alecturer can u send me the interview qusetions with answers . i expected that i got 135 - 140 marks is there any chance to get selection my interview is on may 7th 2010
why Nacl solution called as brine solution?
what is definition of validation? which components are followed give detail?
How are ph and pka related?
What is molality?
What is Band broading effect explain
What is phase transfer catalyst?
how to qualify the impurity?
What is the resulting solution when benzene and toluene are mixed ?
Why Ethanol is Used for Standardization of GC Head space?
which batch require to use for analytical method validation?
pls send me ongc privious entarnace exam papers
