What is the difference between purge septum flow and column flow in gas chromatography?
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How do we fix the sample concentaryion in hplc method development?
why we want incorporate area of each solution of Intermediate precision and repeatability as well as Accuracy ? What is the use to incorporate area of each solution of Intermediate precision and repeatability as well as Accuracy ?
What are the concentration limit for class-1 residual solvents in ICH ?
In case of HPLC coloums what is the difference Between C8 & C18 coloums & how can we select difference type of coloums like Inertial ODS , Hypersil BDS , ODS etc.?
differance between L1 and L7 columns
What is (Q) point dissolution?
Is it necessary to validate both assay and related substances for usp official methods for products.
How to calculate lamp energy in hplc?
why we are use metthanol variously in kfr?why don't use other solutions?
In pharmaceuticals formulation OOS applicable in Raw Material(which is not manufacturing in the company. and purchase by approved vendor)).Why?
why are measure gas flow " ml " in Gas chromatography
what does optical rotation and specific rotataion means,difference between them