A solution ejecting method comprises: a first ejection step wherein a monomer solution for forming an electrophoresis gel, said solution containing at least a monomer for forming a gel structure and a gel polymerization accelerator for activating a gel polymerization initiator, is ejected; and a second ejection step wherein a gel polymerization initiating solution which contains a gel polymerization initiator, is ejected to the monomer solution for forming an electrophoresis gel.
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