Nutrients for 3rd world countries

[Saeid]

Hi everyone. New here. I need to figure out how to mix my own nutrients for a Hydroponic setups as I am planning on taking my new found knowledge and interest to 3rd world countries and teach them how to farm with this method.

Many of the place I will go to will not have access to bottled Nutrition solutions as we get in the West. And the cost would be prohibitive any way.

I'm basically looking for the Holly Grail of the Hydroponic Nutrition. A recipe that tells me which chemicals in which quantities to mix to have a good Nutrition mix for the Hydro gardens.

Any help, links, videos, etc, would be much appreciated.

Saeid