How to make alkaline iodide azide

I'm an IB Chemistry student and I'm doing the Winkler's titration for my Internally Assesed Investigation. However, my school doesn't have alkaline iodide azide, so I need to make that myself first. How do you do that?




I'm quite sure you meant alkaline iodide **sodium** azide solution. The preaparation of this reagent is [given here](http://nitttrc.ac.in/four%20quadrant/eel/quadrant%20-%201/exp10_pdf.pdf):



> 
> To prepare this reagent, take 700 g of potassium hydroxide/500 g of
>  sodium hydroxide and add 150 g of potassium iodide/ 135 g of sodium
>  iodide and dissolve in freshly boiled and cooled water and make up tp
>  1000 ml.
> 
> 
> Dissolve 10 g of sodium azide in 40 ml distilled water and add this
>  solution with continuous stirring to the cool alkaline iodide prepared
>  previously. 
> 
> 
> 


 2