In　order　to　find　a　model　solution　to　simulate　actual　extracellular　polymeric　substances　(EPS)　solution　in　terms　of　filterability　behavior,　a　series　of　experiments　were　conducted　in　a　dead-end　unstirred　cell　with　0.1　mu　m　polyvinylidene　fluoride　membranes　using　binary/ternary　mixtures　consisting　of　sodium　alginate　(SA),　bovine　serum　albumin　(BSA)　and　humic　acid　(HA).　Three　target　parameters　(cumulative　filtrate　volume　(CFV),　specific　cake　resistance　(alpha(c))　and　rejection　(R))　were　compared　and　the　roles　of　mixture　components　were　investigated.　The　order　of　degree　of　influence　on　CFV,　alpha(c)　and　R　in　ternary　mixture　was　SA　(94.5%,　85.6%　and　88.2%,　respectively)＞　BSA　(5.2%,　10.3%　and　8.0%)＞　HA　(0.3%,　4.1%　and　3.8%).　Meanwhile,　when　the　composition　of　ternary　mixture　was　SA/BSA/HA　=　285.1/150.1/10.2　mg.L-1,　the　deviation　for　CFV,　alpha(c)　and　R　was　7.65%,　19.6%　and　7.27%,　respectively,　while　the　corresponding　values　for　the　most　suitable　binary　solution　(SA/BSA　=　140.4/50.35　mg.L-1)　were　-　12%,　1%　and　164%　respectively.　This　indicated　that　the　ternary　solution　demonstrated　a　more　accurate　estimation　than　the　binary　solution　for　imitating　the　filterability　of　actual　EPS　solution.　Therefore,　the　ternary　mixture　could　be　employed　efficiently　to　replace　the　actual　EPS　solution　in　terms　of　three　target　parameters　in　practice　applications.