This micronized tribasic copper sulfate is used against brown rot, scab, fire blight & other diseases on nut and fruit trees. Use 1 1/2 - 2 Tbsp per gal of water. It's packaged with Sta-Stuk M, a spreader/sticker specially formulated to adhere Microcop to bark & leaves for increased effectiveness and extending its life in wet weather. General use rate 1.5 - 2 Tbsp/gal. Contains 12% potassium resinate, 2.5% potassium oleate, 85.5% inerts. The twin pack contains 8 oz of each product. Active ingredient 95% tribasic copper sulfate (50% copper equivalent).