Then MWCO values of those membranes were determined
as selected PEGMW when the corresponding rejection ratio of PEG
reached 95%. Fig. 4 reveals the MWCO determination of PVDF100K
and PVDF100K–PVP membranes by PEG rejection ratio. As seen in
Fig. 4, actual MWCO value of PVDF100K membrane was close to
that of PVDF100K–PVP membrane.