Arsenic Content of Mirconutrient Fertilizers

How much arsenic does your
micronutrient fertilizer contain?

Average arsenic content of Chilean (1,500 ppm), Peruvian (962 ppm), Turkish 10% (157 ppm), Turkish 14% (151 ppm), Turkish 15% (between 20 and 141 ppm), and Granubor (less than 5 ppm)

Sample testing performed at the U.S. Borax Quality Lab in Boron, California.



U.S. Borax, part of Rio Tinto, is a global leader in the supply and science of borates—naturally-occurring minerals containing boron and other elements. We are 1,000 people serving 500 customers with more than 1,700 delivery locations globally. We supply 30% of the world’s need for refined borates from our world-class mine in Boron, California, about 100 miles northeast of Los Angeles.  Learn more about Rio Tinto.

Copyright © 2020 Rio Tinto. All Rights Reserved.