What does 'organic based' mean

[gtnate]

I bought this product last week thinking that it was organic. I put it on my maters this morning, but after I did so, I think I may have made a mistake. I looked at the ingredients and they are all chemicals.

So, I went to the web page of the product and it states that it is 'organic based.' What does that mean? Is it organic or not?

Here is a link to the product's web page.
http://www.ebstone.org/21_tomato.php

And, as long as I have an open thread, I would also like to know if it is necessary to use Epsom salts on tomato plants. I have seen that a lot of people do so.

Thanks,
Nate