event shall any Purchase Order: require delivery of more than [*] units of [*] and [*] units of [*] in any [*] (the "Porex Capacity Limitations")." 4. A new Section 1.5.3 shall be added to the Agreement as follows: 1.5.3 Porex will invoice Cerus monthly for Services performed by Porex during the prior month. Unless otherwise expressly provided in the applicable Statement of Work payment to Porex of undisputed fees shall be due [*] days following Cerus' receipt of the invoice submitted by Porex. Payment information, including Tax Identification Number will be included on each invoice. Cerus shall have the right to accept or reject the Services, or any portion thereof, in writing within [*] days from Porex's completion of the Services. Such acceptance or rejection shall be consistent with the criteria set forth in the Statement of Work, if any. If Cerus does not reject in writing within [*] days, the Services shall be considered accepted by Cerus. Within [*] days of any notice of rejection, Porex shall present a corrective plan of action to Cerus. Upon approval by Cerus of the corrective plan, Porex, at no additional expense to Cerus, shall then make the corrections and, where applicable, Porex shall resubmit the corrected Services to Cerus. For disputed invoices or the disputed portion of an invoice, Cerus shall use reasonable efforts to provide to Porex, in writing, within [*] days, a description of the disputed amounts. Cerus and Porex shall negotiate in a timely, good faith manner to resolve billing queries. Cerus will not have responsibility to pay for identified errors, incomplete or inaccurate items (collectively the "invoice errors") which result in increases to previously invoiced amounts if the aforementioned invoice errors are communicated to Cerus later than [*] days from the original invoice date. 5. A new