Working with a consulting engineer or with a client's Central Engineering Department, we organize overall performance requirements into technical performance criteria and ask prospective vendor to assure that the recommended system will comply with these criteria.
Translating the hardware or mechanical elements of a proposal into performance data requires water-technology expertise combined with equipment experience. Utilizing performance requirements makes the consulting designer's intentions clear so bidders response can and must reflect the client's requirements.
This eliminates supposed "should fit" systems and poor performance analyses.