why using buffers in hplc inteed of water5 7942
How long we can use hygroscopic reference standard in terms of water absorb.I mean in line with respective monograph's specification or more than that?1 1097
Why we use methy Ethyl Propylparabine For HPLC Calibration1 3076
What is use of LOD and LOQ in validtion and give range and in calculation why we use 3.3* LOD here why we use 3.31 2642
In specificity what parametrs are consider why that parametrs2 3609
ash or residue in that what will be there.2 2953
what is the differance between Analytical and semi micro balance?2 8811
In the method validation proceedure,lod & loq calculation we use the formulae for LOD=3.3*SD/slope and for LOQ=10*SD/slope,why we use 3.3 & 10 in the formulae?1 7957
In HPLC Chromatographic separation Resolution equation is Rs = 1.18 (tR2 –tR1)/wh1+Wh2, Where, tR2 and tR1 is run time of eluent ratios of the distances from the point of application to the centers of the spots and the distance travelled by the solvent front from the point of application (retardation factor), and Wh1and Wh2 , is peak width of at half height. What is 1.18 ?1 3090
Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?
Principle of single pan analytical balance
What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)
How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain
WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?
Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6
what are the standard methods for HPLC?
What is the difference between purge septum flow and column flow in gas chromatography?
What is the meaning of Base deactivated vials
Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...
how to select short coloum and long coloumn for new molecule
How to choose the which salt is suitable for mobilephase
How can we determine Moisture content of HI?
how to get accurate result for Residue on evaporation in purified water
how to calibrate hplc & gc