why using buffers in hplc inteed of water5 8665
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 1326
Why we use methy Ethyl Propylparabine For HPLC Calibration1 3417
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 3.32 3229
In specificity what parametrs are consider why that parametrs2 3970
ash or residue in that what will be there.2 3279
what is the differance between Analytical and semi micro balance?2 9748
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 8486
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 3697
Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.
What is the diference between residual solvents and organic volatile matter
what is the purge flow & how to calculate
WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE
What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.
for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol
What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)
what is the principle involved in turbidometry and nephelometry ?
What is column in chromatography?
We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?
Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?
Tell me about analytical method validation in QC
some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?
what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?
How to decide assay range for non pharmacopeial API analysis by HPLC? Could you give me any reference for same e.g Guidelines or Paper publications?