what is the purpose of Buffer in any titration?Ex:In determination of hardness of water we use ammonia ammoniachloride buffer in titration with EDTA.Why?13 74866
why KF factor is between 4.5 to 7.5 mg/ml ? why ? why sometime pyridine is used in analysis like in raw material solvent like acetone etc?10 42332
what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?3036
When performing Moisture content how to you say only Methanol react with water not product Explain?2 7219
give me method of calculating co relation of coefficient for HPLC,SOR & ANY OTHER1 1774
difference between pH & pOH ?4 16939
How we develop a method by HPLC for unknown compound,if we got three peaks with same response then how we can find out which one is our desired compound's peak without taking help of LC MS.4 9908
In case of dissolution test, if there is variation within 6 individual units however the batch is complying as per S1 criteria, is it necessary to do investigation for the same? What should be the criteria for such variation?1 2527
What is the difference between bulk property detectors and Solute property detectors vivimed labs limited3 11385
IF THE COMPOUND PKA IS 5.3 WHY WE ARE ADJUSTING PH+/-2 OF THE COMPOUNDS PKA. WHAT IS THE CONDITION2 7156
WHAT IS THE USAGE OF REFRACTIVE INDEX IN PHARME FIELD3 6220
IN DISSOLUTION TEST S1AND S2 AND S3 CONDITIONS ALL ARE FAILED THEN WHAT IS THE DESSICION U CAN TAKE12 16316
why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?
HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.
What is Band broading effect explain
WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE
WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY
how to select short coloum and long coloumn for new molecule
How to define samples weight in moisture content
A ha tc is actual defination of retention time?
how will you do the prep for unstable componds?
why does used dry caffien in HPLC calibration?
why we are using benzene, anyline in acetic anhdride assay titration method?
Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?
What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio
What is FFA, PV, and PAV value in oil.
Identify problem faced when mass spectroscopy is used with HPLC system ?