Ohio Rev. Code § 1302.52: Cure by seller of improper tender or delivery - replacement - UCC 2-508.

(A) Where any tender or delivery by the seller is rejected because non-conforming and the time for performance has not yet expired, the seller may seasonably notify the buyer of his intention to cure and may then within the contract time make a conforming delivery.

(B) Where the buyer rejects a non-conforming tender which the seller had reasonable ground to believe would be acceptable with or without money allowance the seller may if he seasonably notifies the buyer, have a further reasonable time to substitute a conforming tender.