what is the difference between capillary and glass column in GC1 5301
what is basc principle of the HPLC,IR,UV AND GC? what is difference between diffusion spectra and transmision spectra in IR?1 17495
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 1351
In pharmaceuticals formulation OOS applicable in Raw Material(which is not manufacturing in the company. and purchase by approved vendor)).Why?1 5573
On which pharmacopoeia basis we can calibrate instruments like HPLC,GC,UV,DISSO,IR etc...9 15729
How to make up 100ml of a solution cintaining compound A at 95µg/ml and compound B at30µg/ml for an HPLC reference standard.2 3940
How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain1089
In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.
what is DIPE limit in residual solvent?
why does used dry caffien in HPLC calibration?
why disodium tartarate used in karl-fischer instrument ?.
What 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?
What is control room temperature and which guide line says?
What is the difference between known and unknown impurities?
What is gelatinization?
what is third integration
During Validation study, Recovery is passing at all levels but Linearity is failing. Justify?
Why dissolution test is not performed in all of the products
about method developement in hplc
what type of question will ask in the interview of lab chemist.
How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.
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?