definiens: means ( A ) the Pre - Closing Revenue, plus ( B ) the net revenue earned byPurchaser ( net of refunds, rebates and similar items ) from any quality verification program services provided, oranalytical chemistry and microbiology testing conducted, by Purchaser or any of its Affiliates during the periodcommencing on the Closing Date and ending on December 31, 2017, the orders for which originated through theBusiness ’ Great Plains intake system, as determined on an accrual basis in accordance with GAAP ; provided, however, any revenue earned by Purchaser from any such quality verification program services or analyticalchemistry or microbiology testing ordered by any of the Seller Parties, or any of their majority - owned Subsidiaries, or, in the event of a reorganization of any of the Seller Parties, any parent of the Seller Parties, shall be excluded fromActual Revenue