Aatrex nine

Ciba-Geigy also improved atrazine dry formulations, developing a 90% WDG - AAtrex Nine-O - that greatly minimized dust. Approved by the USEPA on December 10, 1975, it was the first WDG formulation sold in the United States. 

AAtrex Nine-0 Ciba-Geigy next developed AAtrex Nine-O, a 90% concenttation of atrazine in a WDG. AAtrex Nine-0 attracted immediate interest when launched in 1979 because of its handling qualities. The granules flowed freely from the bag and were easier to measure. This type of formulation was new to growers, and it fit in an important agricultural niche. It now is a major atrazine formulation. 

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