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 Categories >> Sciences >> Chemistry
 
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Question Asked @ Answers Views     Select
why we use 254nm for caffeine analysis as it having maxima at different wavelength?    0  4
why we not use caffeine at 205nm for hplc calibration?    0  3
What is chiral and why this performing in HPLC    1  8
What is the difference between kf  and LOD    1  16
What is the reason of RT change in new column v/s old column in HPLC    1  24
What is the reason for negative peak in HPLC while using UV detector.    0  15
Why we compare unequal concentrated solutions in heavy metals test. For example comparing the test solution with 1 ppm lead standard and telling it's less than 20ppm?    1  24
If mass balance is not passing in forced degradation in method validation that method is suitable or not?    0  11
what are stereomers? how are they classified?    0  14
HPLC Calibration gradient method why used union ?    2  33
ex:this product used c18 column but same product used c8 column what happend ?    1  32
uv,ri,pda detactor principles ?    0  17
hplc assay limit 98.0 to 105 why    1  33
Why we use uracil and caffeine in hplc calibration    2  41
What is method validation in quality control    0  23
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Un-Answered Questions
 
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In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % ) 353
why 1.2%kcl solution is using in limit os straylight?and why this test used for uv calibration? 886
function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc? 262
How can the GC or HPLC method is selected to determine the impurity profile in drug product? 1062
How you collect dissolution media while in stirring condition of a basket or a paddle? 264
How to study genotoxicity of impurities in API? 270
in uv visible spectroscopy calibration why we are using potasium dichromate and tolune 198
calibrtion procedue of LC-MS 223
How can we calculate "confidence interval" in analytical method validation? Pl. explain with example. 522
Why 1800 ml of dissolution media used In Carbamazepine ER USP Tablets But other drug only 900 ml Media Used ? 243
WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY 270
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? 118
WHAT IS THE USE OF STARTER ????????? 167
how to prepare the 0.001M tio2 252
Principle of single pan analytical balance 638
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