please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development451
How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?510
How can we calculate offset value pH measurment325
What is stray light in uv what are units for stray light377
What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio462
Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...422
In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?479
How to check hplc detecter sensitivity?381
How to estimate potassium?1 437
How much is the standard area for glc analysis
what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.
explain 5 components of gas chromatography ?
What is the acceptance criteria for moisture balance when calibrated with sodium sulfate
how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.
Why to use propyl paraben in HPLC gradient calibration
Qc interview questions
How to know the estimated LOQ concentration in ppm
what is partion and column chromatography
Why perchloric acid used for potentiometric titration
EXPLAIN THE CALCULATION PART OF AN KF TITRATOR CALIBRATION WITH SUITABLE EXAMPLE
What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio
In Karl Fischer titration,What is the situation if the material tested is only soluble in water,and not soluble in the common solvents used such as methanol ?? [e.g. Iron III Hydroxide polymaltose]
which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc
As per ICH related substances stability trend limit from initial to shelf life