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 77678
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 44193
what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?3143
When performing Moisture content how to you say only Methanol react with water not product Explain?2 7496
give me method of calculating co relation of coefficient for HPLC,SOR & ANY OTHER1 2002
difference between pH & pOH ?4 17513
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 10368
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 2732
What is the difference between bulk property detectors and Solute property detectors vivimed labs limited3 11953
IF THE COMPOUND PKA IS 5.3 WHY WE ARE ADJUSTING PH+/-2 OF THE COMPOUNDS PKA. WHAT IS THE CONDITION2 7436
WHAT IS THE USAGE OF REFRACTIVE INDEX IN PHARME FIELD3 6496
IN DISSOLUTION TEST S1AND S2 AND S3 CONDITIONS ALL ARE FAILED THEN WHAT IS THE DESSICION U CAN TAKE12 17198
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?
how the compound separate in coulunm,explain
WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE
what is the principle of UV Vis spectroscopy, AAS, ICP OES,ICPAES, ICP-MS and FTIR
how much mass should be there in volumetric flask while in preparation of sample for assay?
what is procedure of actual procedure for registration of drug?
could negative ions be produced by bombardment process in mass spectrometry?
please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development
Why Ethanol is Used for Standardization of GC Head space?
Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?
what is turbidimetric titration?Give 2 examples.
why we are using hexane in calibration of number of drop per mL
AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?
In performance Check of GC Why Hexadecane Peak is Considered
what is %labelled amount in content uniformity of dosage unit and its calculation?