About Food certification process?

I been analysing about food certification process and food supply chain for past 2 weeks. I am clear about the supply chain from farm to table but about certification i had some doubts.

1. i am clear in how farmer gets certified by sending his sample of land and water to certified as organic farmer. 

2. The doubt is where and in which process of the supply chain food or product gets certified and by who.

for example : farmer sending the raw material to the manufacturer and manufacturer processed it and send it to the rest of them in the supply chain. in this where the product gets certified that this is quality product.

There are no answers yet.
Be the first to answer this question.