Hi Ga judoka,

I know nothing about Georgia, but would suggest the following:
Try for Monoammonium phosphate (MAP) instead of Monopotassium phosphate. It should be available from agricultural fertilizer suppliers.
Copper sulphate is "Bluestone", available from hardware stores. It is sometimes used to kill tree roots in drains.
Forget Boric Acid (its solubility is very low); instead go for Borax (Sodium tetraborate) available from the laundry shelves in good supermarkets.
Manganese Sulphate, Zinc Sulphate and Ammonium Molybdate are all available from fine chemical suppliers. Purchase the Technical Grade and share the cost with friends. Look up "Chemical Suppliers" in your local "Yellow Pages".
Magnesium Sulphate is Epsom's Salts. I recommend getting the British Pharmacopoiea (BP) grade as it has no Iron contamination. Stuff purchased from plant nurseries contains too much Iron as a contaminant, which will turn your concentrated nutrient solution black within a few days. Purchase BP grade Epsom's Salts from your local supermarket.
Potassium Sulphate ... I do not know why you need it, but it is available from plant nurseries and agricultural chemical suppliers.
Calcium Nitrate, usually sold "prilled" to resist its hygroscopic nature is available from agricultural chemical suppliers.
Finally, Potassium Nitrate is an Oxidising Agent (Dangerous Goods) and should be available from agricultural chemical suppliers. In Australia, this material is on a restricted list ... it is not an explosive, but can be used in their manufacture. You may have to convince your supplier that you have good intentions with its use.

So look up "Agricultural Fertilizers", "Agricultural Chemical Suppliers", "Chemical Suppliers" and "Fine Chemicals", and visit your local nurseries and hardware stores, and find a buddy to share the cost of at least three of them mentioned above, and you should be OK.

Cheers,
Jimr007.

Hi Jim. Thanks for the reply. The hydroponic nutrient formula from Howard Resh calls for potassium sulphate, and that is why I was looking for it.

Thanks again