Feasibility test is designed to minimize time and expense to confirm if the technology is appropriate and economic enough to consider additional testing. The testing program is often a two-step process. Step 1 is often termed a “feasibility” test and is useful to generate samples for lab analysis to ensure the proper separation is achieved. In addition, Step 1 also provides single-point flux and cleaning data to allow a budgetary estimate of the full-scale system size and economics. If the feasibility results are positive, Step 2 of testing is used to collect scalable data to optimize the membrane system design, economics, and integration into the balance of the process. In general, it is important to test on the same feed stream as full scale and under the same process conditions, as much as possible.