What is the difference between potentiometry assay and HPLc assay?2 12039
how std. of znso41 2765
Which std. used for standrdisation of ZnSO4?1 1067
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 5443
How decided 10 ppm standard solution in Swab, rinse method.?1 5875
WHAT IS THE LIQUID PHASE IN DB-624 COLUMN IN GCHS3 6049
In capadity factor formula is K'= (RT of main compound/RT of first eluted peak)-1 in this formula what is 11 4729
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 2264
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 5399
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 ?1154
what is the extinction coefficient for Indomethacin or at 319nm wave length.
Why irmoisture balance is used for corrugated box moisture testing
What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent?
Basic principle of ESI?
What is the diference between residual solvents and organic volatile matter
what type of questions asked on analytical balance and also give answers................all pharma companies?
process of Diclofenac sodium,IP.
What are the primary considerations in extractables and Leachables ?
sop of a uv visible spectrophotometer double beam elico model
WHY given much noise PDA dector then VWD Dector
What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)
why we are using benzene, anyline in acetic anhdride assay titration method?
In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.
why we use a particular hplc column for a particular compound give reasons?please
What is Band broading effect explain