What is the difference between potentiometry assay and HPLc assay?2 12352
how std. of znso41 2836
Which std. used for standrdisation of ZnSO4?1 1153
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 5541
How decided 10 ppm standard solution in Swab, rinse method.?1 6019
WHAT IS THE LIQUID PHASE IN DB-624 COLUMN IN GCHS3 6190
In capadity factor formula is K'= (RT of main compound/RT of first eluted peak)-1 in this formula what is 11 4833
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 2343
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 5547
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 ?1208
how the compound separate in coulunm,explain
Why to use propyl paraben in HPLC gradient calibration
Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?
why octanol used to determine the partition coefficient ?
What is the acceptance criteria for moisture balance when calibrated with sodium sulfate
how much mass should be there in volumetric flask while in preparation of sample for assay?
In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?
In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )
what is partion and column chromatography
how to calibrate hplc & gc
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.
what is the structure of DOWEX-50
can i use hplc detector to uplc and why?
WHAT IS THE USE OF STARTER ?????????
Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?