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 2432What is use of LOD and LOQ in validtion and give range and in calculation why we use 3.3* LOD here why we use 3.3
2 5537In 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 10067In 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 6227Post New Analytical Chemistry Questions
Why a1% value is used for some product ? What is the criteria for selection a1% value ?
how much mass should be there in volumetric flask while in preparation of sample for assay?
what type of questions asked on analytical balance and also give answers................all pharma companies?
Did anybody have method for acetyl cysteine effervescnce tablet
How doing qbd practically?
For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?
How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.
analytical method validation require to with respect to release specification or shelf life specification?
which batch require to use for analytical method validation?
How do we fix the sample concentaryion in hplc method development. What is the basis?
function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?
Why sodium hydroxide used for maintain pH of phosphate buffer
What is the diffrence in japan mkt requirement in analytical method validation over US?
give clarity of linearity and range in method validation
what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?
