please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development308
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?315
How can we calculate offset value pH measurment185
What is stray light in uv what are units for stray light219
What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio283
Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...225
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?292
How to check hplc detecter sensitivity?221
How to estimate potassium?1 214
We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?
when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.
what is the importence and role of LCMS and LCMS/MS and their applications? which type of compounds are analysis by lcms?
What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent?
How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.
What is importance of pH in the Heavy metal test and How it effect on the test results?
why does used dry caffien in HPLC calibration?
what is difference between zero air gas and o2 gas
Did anybody have method for acetyl cysteine effervescnce tablet
How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?
As per ICH related substances stability trend limit from initial to shelf life
pharma industries oriented
what is the limit for KF Factor ,we take factor using water we will found factor between 6 to 7 ,while on KF Reagent bottle mentioned 5 mg/ml water content.if we not use dried methanol it is effect on factor.
What is the acceptance criteria for moisture balance when calibrated with sodium sulfate
We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy