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Chromatographic Purity is a Qualitative analysis
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differance between L1 and L7 columns
Difference between uv detector nd RI DETECTOR? wt s the difference between OVI Solvents nd residual solvents incase of GAS CHROMATOGRAPHY? nd wt s its detection limit?
Basic principle of ESI?
In Karl Fischer titration,What is the situation if the material tested is only soluble in water,and not soluble in the common solvents used such as methanol ?? [e.g. Iron III Hydroxide polymaltose]
Why the ph limit (1_14) Is used?
Why we use methy Ethyl Propylparabine For HPLC Calibration
Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...
What is the formula for relative diffrence for standard solution in solution stability in validation?
Explain what is a base line?
How to determine water content of bis tetrazole amine mono ammonium salt
Why we inject a standard 6 times for Related substances by HPLC and 5 times for Assay?
How can we konw that the HPLC column is endcapped? Is it possible to identify visually without COA?
Organic Chemistry 
