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 Categories >> Sciences >> Chemistry
 
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Question Asked @ Answers Views     Select
Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6    0  3
Why base line not start from zero in GC Chromatography analysis.    0  7
What is Formula of Potency calculation on Dried basis, As is basis& Anhydrous basis.    1  26
What is the difference between STANDARDIZATION and CALIBRATION of instrument like KF? why do we standardization of KF everyday? Why the KF factor being only 5.02 etc?     1  50
using gradient pressure in gas chromatography are not ?using gradient pressure why    0  36
In Agilent HPLC calibration using Empower 3 Software, What is the criteria for GPV Baseline starting point? i.e., Either it can start from -0.00/+0.00 or any range is there like -0.05 to +0.05 or ......etc?    0  34
What is the meaning of 624 in DB-624 Capillary column used in GC?    3  64
Hello Dear all; I have a technical question related to analytical Chemistry, I have a sample of (40% w/w) Ferric Chloride solution (for water treatment purposes which consist a little portions of Ferrous Chloride and Hydrochloric acid. I need to know the methods to determine the percentages of each Ferrous Chloride and Chloride acid. Also I want to make sure that this solution is truly (40% w/w). So ANY CLUE !!! Thanks in advance.    0  44
what is difference b/w spectroscopy, Spectrometry and Spectrophotometry ?    1  87
How to Calibrate NMR instrument ?    0  42
What are the inorganic material eliminated in Sulphated Ash    0  35
whenever kf titration is done that time one result is high and second one lower  results what to do.    0  53
why we use 254nm for caffeine analysis as it having maxima at different wavelength?    0  35
why we not use caffeine at 205nm for hplc calibration?    0  45
What is chiral and why this performing in HPLC    4  118
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Un-Answered Questions
 
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What are acounting Pi electron's? 271
How much sample concentration should i inject against diluted standard in related substances for drug product in hplc analysis 163
what is partion and column chromatography 199
from where i get mortar pastle for glass bottle crush? it's required for testing of it? 187
what are the standard methods for HPLC? 280
How can the GC or HPLC method is selected to determine the impurity profile in drug product? 1112
In partical size by malven,which parameter is generlly change for development of dry and wet method. 117
what are the role of chemical education in sustainable development 216
Sulphated Ash incresed it will effect on product yield? 114
The use of vermilion on rubric of the Tartar Relation is confirmed by the presence of three lines attributed to HgS. Why should this diatomic have more than one vibrational line? 614
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 ? 527
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 3.3 393
what is silicon chip 225
How to study genotoxicity of impurities in API? 279
HI, I AM SUNIL BISHNOI.I AM PREPARING FOR ISHRO ASTRONOTES EXAM.PLEASE TELL ME ALL ABOUT THIS. 554
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