. 2017 Aug 14;7:8050. doi: 10.1038/s41598-017-08027-5

Table 1.

Solutions purged through the different orifices of the spinneret.

Group	1	2	3
Bore fluid (Orifice 1)	Water/NMP/PEG400 (40/30/30)^a	Water (100)^a	Water/NMP/PEG400 (40/30/30)^a
Support layer solution (Orifice 2)	PES/NMP/PEG400/Water (16/40.5/40.5/3)^a	PES/NMP/PEG400/Water (16/40.5/40.5/3)^a	PES/NMP/PEG400/Water (16/40.5/40.5/3)^a
Pore former (Orifice 3)	Glycerol	Glycerol	Glycerol
Film forming solution (Orifice 4)	CA/1,4-dioxane (8/92)^a	CA/1,4-dioxane (12/88)^a	GH 62/THF (12/88)^a

^aThe ratios of the components in the solutions are expressed in wt%.