In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?
2703Why Urasil and Caffeine use for HPLC wavelength accuracy calibration. which is most suitable, Why? other than these which can be used?
7 16907When we r doing processing method for sst in Empower software by HPLC, What value has to give in void volume and as per which pharmacopia!
5 13379is a bonded water molecule in an organic material can be easlisy and accuractly determined by KF rather than LOD
2 6674What will be the effect on HPLC analysis result if three mobile phases given separately through three valves and same proportion mixed together and given by one valve?
LOIL,
1 4498Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.
2387mixed 1.0 ml of methanol and 1.0 ml of toluene and injected in gas chromatography.will you prove that both solvents are in the ratio 1:1(not by area normalization)
1 2907Post New Analytical Chemistry Questions
1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.
which are the sizes of capsules?
what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?
Which is the highly polar and highly non polar column in HPLC?
what is the principle involved in turbidometry and nephelometry ?
Many times I don't got a caffeine peak in calibration of hplc using guard column ❓
could negative ions be produced by bombardment process in mass spectrometry?
USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...
in dissolution if one bowl got 70 percent 2nd bowl got 80 percent and 3rd bowl got 90 percent then how proceed?
If we have 5 strength which is not dose proportinate and excipients also diffrent in each strength then how we can proceed for Force degradation? and excipient are same but not dose propotinate the how FD?
in DMF having extra impurities and in api COA also having extra imp than USP or BP product then how require to proceed?
what type of question will ask in the interview of lab chemist.
Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18
1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer
identification is for unknown? qualification for known? reporting for LOQ?
