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From where 16 or 5.545 is derived in theoretical plates calculation formula by USP or JP/BP/DAB and what is meaning of this coefficient and impact in calculation ?
2 12988can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?
2228Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?
2231What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?
8920What is the difference between Spectroscopy and spectrophotometry,What are the applications?
4 12045Post New Analytical Chemistry Questions
What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.
[3/30, 13:29] Manoj P Venkatpurwar: How hplc column selection according to structure? How mobile phase buffer selection on molecule structure?
IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?
Is it nessesary all multimedia dissolution require descriminatory?
How to decide assay range for non pharmacopeial API analysis by HPLC? Could you give me any reference for same e.g Guidelines or Paper publications?
What is split ratio in Gc? Splitless? how requirr to select?
From where require to take the RLD sample?
Why Ethanol is Used for Standardization of GC Head space?
why are measure gas flow " ml " in Gas chromatography
How to establish relative response factor for hplc. Why it is required?
Colorimtry
why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?
In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )
if your impurity coeluting with each other in that situation how require to set specification? is it acceptable?
How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?
