Check the listing for details. Copper Sulfate Crystals 10lb Bag (FINE CRYSTAL). Condition: New. Listed at 36.00 USD. COPPER SULFATE FINE--FEED GRADE--10 Pound Bag CONTAINS: Copper Sulfate (Pentahydrate), Copper as metallic 25.2% This is Old Bridge Copper Sulfate---Made in the USA!! Note: This Does NOT have an EPA label or EPA number on the label----We are just simply selling feed grade Copper Sulfate. Is not registered as a pesticide. Delivered in a box by USPS just days after you order!!COPPER SULFATE FINE--FEED GRADE--10 Pound Bag CONTAINS: Copper Sulfate (Pentahydrate), Copper as metallic 25.2% This is Old Bridge Copper Sulfate---Made in the USA!! Note: This Does NOT have an EPA label or EPA number on the label----We are just simply selling feed grade Copper Sulfate. Is not registered as a pesticide. Delivered in a box by USPS just days after you order!!