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 82701
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?11 50914
what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?3467
When performing Moisture content how to you say only Methanol react with water not product Explain?2 8163
give me method of calculating co relation of coefficient for HPLC,SOR & ANY OTHER1 2494
difference between pH & pOH ?4 18652
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 11584
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 3387
What is the difference between bulk property detectors and Solute property detectors vivimed labs limited3 13452
IF THE COMPOUND PKA IS 5.3 WHY WE ARE ADJUSTING PH+/-2 OF THE COMPOUNDS PKA. WHAT IS THE CONDITION2 8225
WHAT IS THE USAGE OF REFRACTIVE INDEX IN PHARME FIELD3 7253
IN DISSOLUTION TEST S1AND S2 AND S3 CONDITIONS ALL ARE FAILED THEN WHAT IS THE DESSICION U CAN TAKE12 20265
What is related substance by HPLC impurity limits as per USP?
Basic principle of ESI?
How to fix the sample conc. in Related substances test by HPLC?
What is similarity factor and its use in api strength?
what is the origin to prepare standard operating procedure
Why use only methanol,used determinationof moisture content not use other solvents
What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.
Why irmoisture balance is used for corrugated box moisture testing
A ha tc is actual defination of retention time?
How to calculate coreletion coefficient
What is delay volume?
How to do regeneration of Metacarb Pb plus column?
Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?
Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?
How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.