Figure 3: Comparison of the 3 kDa, 10 kDa and 30 kDa MWCO membranes (sample 1# to sample 2#) and 30 kDa MWCO membrane (sample 2# to sample 3#) for the filtration flux at varied VCR. The UF device is the spiralwound filtration rig, operated at TMP of 2-bar, ambient temperature (ca. 25°C), and pH 7.0 for the UF feed. Curve a (□): filtration flux for the 30 kDa membrane (sample 2# to sample 3#), Curve b (▲): filtration flux for the 3 kDa membrane, and Curve c (▽): filtration flux for the 10 kDa membrane, and Curve d (●): filtration flux for the 30 kDa membrane.