why we use only vanilline , acetanilide,& caffeine For the Calibration of melting point appartus?7 20729
which solvent is highest poler acetonitrile dimethyl formamide methanole tetrahydrofurane buffer solution8 9250
what is the difference betwen the analytical column & peparative column?4 10446
what is the general mechanism of high performance liqiud chromatography?7 12665
why 2Theta value is consider in the XRPD spectra and how to consider the 2 Theta value2 5731
what does optical rotation and specific rotataion means,difference between them8 25625
i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me1421
1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer
How can I develope method of dissolution by HPLC OR UV
In HPLC (Waters) software Empower1,2 &3 what is the updation for each version
give clarity of linearity and range in method validation
Tell me something about Vitamin A test method by HPLC
could negative ions be produced by bombardment process in mass spectrometry?
how you determine moist.of NaOH sol or NaOH flacks
Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...
My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards
what is the importence and role of LCMS and LCMS/MS and their applications? which type of compounds are analysis by lcms?
What is viod volume and peak purity in HPLC?
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?
How we can determine water content in piperazine
explain 5 components of gas chromatography ?
mahagenco syllabus for the post of chemist