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 Categories >> Sciences >> Chemistry >> Analytical Chemistry
 
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Question Asked @ Answers Views     Select
Why base line not start from zero in GC Chromatography analysis.    0  5
What is Formula of Potency calculation on Dried basis, As is basis& Anhydrous basis.    1  24
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  49
using gradient pressure in gas chromatography are not ?using gradient pressure why    0  35
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  33
What is the meaning of 624 in DB-624 Capillary column used in GC?    3  62
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  43
what is difference b/w spectroscopy, Spectrometry and Spectrophotometry ?    1  85
How to Calibrate NMR instrument ?    0  41
What is chiral and why this performing in HPLC    3  117
What is the difference between kf  and LOD    3  124
What is the reason of RT change in new column v/s old column in HPLC    1  115
What is the reason for negative peak in HPLC while using UV detector.    1  111
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  96
If mass balance is not passing in forced degradation in method validation that method is suitable or not?    1  58
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AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE? 157
how you determine moist.of NaOH sol or NaOH flacks 220
2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH. 157
give me method of calculating co relation of coefficient for HPLC,SOR & ANY OTHER 301
What is the difference between spectro meter and spectro photo meter? 1600
What is the purpose of octyl silane columns? 584
sop of a uv visible spectrophotometer double beam elico model 1351
what type of question will ask in the interview of lab chemist. 372
What is importance of pH in the Heavy metal test and How it effect on the test results? 127
What is difference b/w IR&NIR 104
importance of internal standard and in what conditions it is used? 228
how to regulate noise in HPLC? 303
Why only lead standard solution is uesd to perform heavy metal test. 111
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? 208
principle of UV , PDA , RI DETECTOR IN HPLC & FID , TCD , FPD DETECTOR IN GC? 2914
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