What is the difference between potentiometry assay and HPLc assay?2 10959
how std. of znso41 2573
In GC and HPLC ,how we can decide which of following method will be suitable or use for quantitation of chromatogram at the time of method development. 1.Area Normalisation 2.External standard method 3.Internal standard method
what is mean by profiling of dissolution1 5075
How decided 10 ppm standard solution in Swab, rinse method.?1 5395
WHAT IS THE LIQUID PHASE IN DB-624 COLUMN IN GCHS3 5588
In capadity factor formula is K'= (RT of main compound/RT of first eluted peak)-1 in this formula what is 11 4394
In HPLC (Waters) software Empower1,2 &3 what is the updation for each version
hii, i'm had a sample of 1L that gone through extraction & evaporation. i used 0.5ml of methanol for reconstitution before injecting the sample to HPLC. i made a calibration curve using a standard solution but now i'm confused about how to display the concentration i got from the sample. for ex. i got 0.2ug/ml how i'm gonna explane this is for the 1L ? please help .. i'll really appreciate it thanks1 2018
Dear Sir, This is Thirunavukkarasu am working in Ordain Health Care AR&D, Am Having one problem While doing method development my question Metadoxine and Pyridoxine same chemical nature and structural activity i tried lot of methods but Analyte eluted same Retantion time i cant separate both peaks. solubility, pH both are same only only difference melting point metadoxine 210 C Pyridoxine 102 C please do the help needful for me5 4961
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 ?1038
what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?
What is the acceptance criteria for moisture balance when calibrated with sodium sulfate
What is control room temperature and which guide line says?
what is separation techniques.
How to check hplc detecter sensitivity?
what is the identification test of volatile substance? what is volatile compound?
Why sodium hydroxide used for maintain pH of phosphate buffer
in gas chromatography what is the difference between gas flow rate and average linear velocity ?
How to choose concentration of LOQ solutions for RS analysis? Example.
In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.
What is the pilot-plant in pharma sector.
what is the purge flow & how to calculate
why we use a particular hplc column for a particular compound give reasons?please
What is gelatinization?
are there in uv lamb that is chractrestic for wavelenghth 205 nm ?????