what is the difference between capillary and glass column in GC1 5845
what is basc principle of the HPLC,IR,UV AND GC? what is difference between diffusion spectra and transmision spectra in IR?1 18383
plz tall me that any pharmacopeia and guideline is par meted to use 1.68,4.01,7.00,9.00,12.45 buffer for ph meter calibration1 1785
In pharmaceuticals formulation OOS applicable in Raw Material(which is not manufacturing in the company. and purchase by approved vendor)).Why?1 6099
On which pharmacopoeia basis we can calibrate instruments like HPLC,GC,UV,DISSO,IR etc...9 16905
How to make up 100ml of a solution cintaining compound A at 95µg/ml and compound B at30µg/ml for an HPLC reference standard.3 4406
How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain1229
some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?
how can give the expiry period and restadardisation of volumetric solution
What is viod volume and peak purity in HPLC?
Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?
What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent?
why we are using hexane in calibration of number of drop per mL
How to choose the which salt is suitable for mobilephase
What is the main difference between ODS1 and ODS2 Hplc column.
How much is the standard area for glc analysis
How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain
In HPLC (Waters) software Empower1,2 &3 what is the updation for each version
Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...
acceptance criteria for lod & loq by standard deviation of response and slope??
mahagenco syllabus for the post of chemist