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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 4212Dear 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 9727some 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 ?
2651When ever we perform system suitability,inject the corresponding standard 6 times why? is thair any reson
4 10732Ratio 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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What is the number of protons in an atom?
what is the purpose of using cyclhexane in synthesis?
What is the difference between volumetric solutions and test solutions
What is the role of silver sulphate?
could negative ions be produced by bombardment process in mass spectrometry?
Normally entropy is expressed as q/T. But, work and heat have same unit. Why can't it be replaced by work?
there is something which we call as the basicity of an acid i wanted to ask is that is there something like the basicity of an alkali if yes than how can we define it?
Why is ammonium hydroxide added to the brass solution?
what are the differences between assay procedures and estimation in chemical analysis? also what is the equivalent factor that we consider in assay analytical procedures?
What is the difference between cracking, pyrolysis, destructive distillation, hydroforming, carbonization and dry distillation?
Protactinium has a relatively short half-life for some of its isotopes. How does this characteristic impact its practical uses and research?
Actinium-227 can decay into Thorium-227. Explain the significance of this decay chain and its applications, particularly in nuclear physics.
What is kentchin?
What is a difference between potency and purity?
What are some common isotopes of Actinium, and how do they differ in terms of stability and uses?
