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 72047
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 40007
what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?2948
When performing Moisture content how to you say only Methanol react with water not product Explain?2 6943
give me method of calculating co relation of coefficient for HPLC,SOR & ANY OTHER1 1610
difference between pH & pOH ?4 16324
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 9548
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 2319
What is the difference between bulk property detectors and Solute property detectors vivimed labs limited3 10773
IF THE COMPOUND PKA IS 5.3 WHY WE ARE ADJUSTING PH+/-2 OF THE COMPOUNDS PKA. WHAT IS THE CONDITION2 6981
WHAT IS THE USAGE OF REFRACTIVE INDEX IN PHARME FIELD3 5956
IN DISSOLUTION TEST S1AND S2 AND S3 CONDITIONS ALL ARE FAILED THEN WHAT IS THE DESSICION U CAN TAKE12 15552
what is separation techniques.
How to determine the EDTA content by potentiometry titration in Ceftriaxine sodium
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?
How can we determine Moisture content of HI?
Which is the highly polar and highly non polar column in HPLC?
In performance Check of GC Why Hexadecane Peak is Considered
In Dissolution Test why limit is define Q+5% what is the role of +5%.
Dear sir, This is R.Kadambavadani working in a pharma industry. while doing RS analysis of ibuprofen API, unknown peak eluting some times in the 0.6 Min RT. Kindly send me what is the exact reason behind that. also am using ACN the mobile phase.
what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?
we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion
wat is the role of michelson interferometer in FTIR and He-Ne lase.detailed answer required in simple language
explain 5 components of gas chromatography ?
how can delete the impurity in 1-(2:6 dichloro phenyl)-2-indolenone.and desolving the impurity in which solvent but does not desolve product in solvent.
why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?