Note 13 . Commitments and Contingencies Under the terms of the PCD Agreement, we are required to pay contingent consideration if the cumulative revenues for our process challenge device business for the three years subsequent to the acquisition meet certain levels. The potential consideration payable ranges from $0 to $1,500,000 and is based upon a sliding scale of three -year cumulative revenues between $9,900,000 and $12,600,000. Based upon both historical and projected growth rates, we initially recorded $300,000 of contingent consideration payable which represented our best estimate of the amount that would ultimately be paid. We paid $150,000 of the contingent consideration during the year ended March 31, 2016 ( based upon the then current run rate projected over the entire three -year contingent consideration period). Since the initial payment, the revenues have significantly increased and as a result, during the year ended March 31, 2017 we recorded an additional $450,000 accrual (which is included in other expense, net in our consolidated statements of income for the year ended March 31, 2017). We paid an additional $450,000 of the contingent consideration in our third quarter ending December 31, 2016. The remaining contingent consideration amount is also subject to modification at the end of the third year of the earn-out period based upon the actual revenues earned over the contingent consideration period. Any changes to the contingent consideration ultimately paid will result in additional income or expense in our consolidated statements of income. We will continue to monitor the results of our process challenge device business and we will adjust the contingent liability on a go forward basis, based on then current information. On November 6, 2013, we completed a business combination (the Amega Acquisition) whereby we acquired substantially all of the assets and certain liabilities of Amega Scientific Corporations (Amega) business which provides continuous monitoring systems to regulated industrie