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. Author manuscript; available in PMC: 2021 Nov 1.
Published in final edited form as: Electrophoresis. 2020 Apr 9;41(21-22):1878–1892. doi: 10.1002/elps.202000015

Figure 6.

Figure 6.

A picture of the pH chip (A). Two bipolar membranes generate a pH gradient between 2 and 10 in a 2 mm channel (B). A flowing mixture of four fluorescent proteins (C) with different isoelectric points are separated into four different channels (D) (Reproduced from [53] with permission from the Royal Society of Chemistry).