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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 thanks
1 4214Dear 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 me
5 9729some 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 ?
2652When ever we perform system suitability,inject the corresponding standard 6 times why? is thair any reson
4 10735Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?
29631)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.
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function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?
How you develop a method in HPLC?
What is the number of protons in an atom?
How is the measurement of ph made?
In order to avoid the pyridine catalyst use in many synthesis which is harmfull to environment, which catalyst can be used....?
What is the diffrence in japan mkt requirement in analytical method validation over US?
Define hydra?
why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?
why are prepare daily working standard in ft ir
What is similarity factor?
for inorganic molecules require to do RS, Assay and disso?
Which wavelengths are visible to human eye?
How does Protactinium contribute to our understanding of Earth's history and the behavior of elements in natural systems?
how to decide for one product require water content or LOD?
How a balanced equation can be used to find the mass or volume of an unknown quantity in a stoichiometry?
