Dear Ahmad,There matter of ...

Dear Ahmad, There matter of applications, some places DMF are move economical and beneficial then using UF. Some application are of DMF is used as Pre-Filtration to UF. DMF cheaper to replace than UF membranes DMF having filtration efficiency up to 50 - 100 microns. Whereas UF having Filtration Efficiency up to 0.02 - 0.03 micron. SDI most of the times unaffected by DMF whereas UF reduces SDI significantly. Overall Cost of DMF is cheaper than UF if we compare DMF you only need to change Media whereas you need to change UF membrane as a whole. DMF media life depends but normally Sand media up to 2 - 3 years whereas Activated Carbon Life 1 years max. UF acquire/occupy lesser space then DMF For me normally it is not appropriate to compare both as this is matter of application and normally you are very clear in the product water requirement so you choose which type of filtration is better/economical to apply.