i will appreciate any guidance.
A useful guideline for me is http://www.scielo.br/pdf/paideia/v22n53/en_14.pdf
You can use this link to calculate kappa coefficient.
I think you have reasonable replies about developing a questionnaire.
It's a standard topic in psychology.
Regarding kappa, see
http://cswww.essex.ac.uk/Research/nle/arrau/icagr.pdf
The column is used in Ion Exchange Chromatography of Monoclonal antibodies and the method of analysis is based on pH gradint.
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