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 Categories >> Sciences >> Chemistry >> Analytical Chemistry
 
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Question Asked @ Answers Views     Select
What is the meaning of 624 in DB-624 Capillary column used in GC?    0  12
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  11
what is difference b/w spectroscopy, Spectrometry and Spectrophotometry ?    0  23
How to Calibrate NMR instrument ?    0  11
What is chiral and why this performing in HPLC    3  42
What is the difference between kf  and LOD    2  53
What is the reason of RT change in new column v/s old column in HPLC    1  57
What is the reason for negative peak in HPLC while using UV detector.    1  48
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  51
If mass balance is not passing in forced degradation in method validation that method is suitable or not?    0  25
Why we use uracil and caffeine in hplc calibration    2  77
What is method validation in quality control    0  36
why the ph scale range is 1 t0 14 and why not beyond 14 and not to below 1?    3  80
what is rt and rrt? how we find rrt? relation between rt and rrt/    1  44
Why do we use KCl ,K2Cr207,Toulene & Halonium oxide for the caliberation of UV    2  85
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Un-Answered Questions
 
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acceptance criteria for lod & loq by standard deviation of response and slope?? 31
pda detector mechanism? 126
What is the meaning of 624 in DB-624 Capillary column used in GC? 12
why 0.02% solution toluene &noHexane using in uv calibration? 1028
Why we inject a standard 6 times for Related substances by HPLC and 5 times for Assay? 1459
How to Prepare Dilute Sodium hydroxide solution? 249
How can we determine Moisture content of HI? 159
Why we use methy Ethyl Propylparabine For HPLC Calibration 194
For LOD and LOQ determination which method is accurate? (slopemethod or s/n ratio method) 78
Tell me something about Vitamin A test method by HPLC 219
what is difference b/w spectroscopy, Spectrometry and Spectrophotometry ? 23
cefoperozone and sulbactam inj. hplc test method 395
i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me 314
How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically. 230
what is the use of tap density apparatus? why we calculate it? what is the difference between the bulk density and tap density? 261
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