What is the difference between potentiometry assay and HPLc assay?2 11891
how std. of znso41 2735
Which std. used for standrdisation of ZnSO4?1 1026
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 5402
How decided 10 ppm standard solution in Swab, rinse method.?1 5822
WHAT IS THE LIQUID PHASE IN DB-624 COLUMN IN GCHS3 5987
In capadity factor formula is K'= (RT of main compound/RT of first eluted peak)-1 in this formula what is 11 4681
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 2222
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 5306
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 ?1136
1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.
what are the standard methods for HPLC?
why we use a particular hplc column for a particular compound give reasons?please
While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?
How to choose the which salt is suitable for mobilephase
how you determine moist.of NaOH sol or NaOH flacks
Which is the highly polar and highly non polar column in HPLC?
what type of questions asked on analytical balance and also give answers................all pharma companies?
What is the principle of Thermal conductivity detector and FID?
why does used dry caffien in HPLC calibration?
Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?
Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.
What is the difference between purge septum flow and column flow in gas chromatography?
Did anybody have method for acetyl cysteine effervescnce tablet
why equlirium conatant of water have 14 value