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 Section 3a shall be added to the Agreement as follows: "3a Non-Production Related Work. From time to time, Cerus may submit to Porex written work orders substantially in the form of Schedule 3 that specify development activities, engineering analysis, part, material and/or fixture design and development, or other services or activities that Cerus requests Porex to perform that are not activities or services that are necessary for the then-current manufacture and production of Components for Cerus under the Agreement (collectively, as defined in each work order, the "Services"). Each work order shall set forth the terms and conditions (including specifications (if applicable), delivery and performance schedules, and fees) pursuant to which Porex will perform the Services. Upon acceptance of a work order by Porex (in writing), such work order shall become a "Statement of Work." If Porex begins to perform services under a work order that has not been formally agreed in writing, then Porex shall bear the costs of any expenses incurred prior to formal written agreement of the Statement of Work. Cerus hereby consents to Porex's use of the Cerus Dedicated Space and Equipment, as specified in a Statement of Work, solely as necessary to perform the Services under that Statement of Work. Such consent shall automatically terminate upon the completion of the applicable Statement of Work and is limited by the terms of the Agreement. In the event of any conflict between the Agreement and a Statement of Work, the Agreement shall control unless the Statement of