Difference between uv detector nd RI DETECTOR? wt s the difference between OVI Solvents nd residual solvents incase of GAS CHROMATOGRAPHY? nd wt s its detection limit?
3 10838on what basis SOP's can be changed? IF mobile phase ratio is 70:30 to how much % can we change the ratio in HPLC process
7 10968how do start hplc method development? how much sample required for developing the method development?
3 40608which pharmacopeoia mentions that caffiene is used as a standard for HPLC calibration? which other standardscan be used for the same?
1 5315Why will a solution of aspirin without acid or basic hydrolysis give yellow colour with a solution of Ferric chloride?
1 3606In HPLC what is Single point threshold, peak purity index and minimum peak purity index? what should be consider for pure peak.
3 21734Post New Analytical Chemistry Questions
What is aggregate and fragments in SEC?
In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )
using gradient pressure in gas chromatography are not ?using gradient pressure why
In Karl Fischer titration,What is the situation if the material tested is only soluble in water,and not soluble in the common solvents used such as methanol ?? [e.g. Iron III Hydroxide polymaltose]
What is the difference between known and unknown impurities?
what is the structure of DOWEX-50
What is the difference between BD
WHY given much noise PDA dector then VWD Dector
are there in uv lamb that is chractrestic for wavelenghth 205 nm ?????
What should be the level/ Percentage of Arsenic in Arsenic free zinc.
what is weight veriation in pharma industry ? plz explain me
iam usig ph buffers merk. manually how to prepare ?
mahagenco syllabus for the post of chemist
Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?
Why potassium dichromate was using in Uv calibration?
