FIG. 1 is a front left perspective view of a reaction tank for electrophoresis apparatus, showing our new design;

FIG. 2 is another front left perspective view thereof;

FIG. 3 is a right rear perspective view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a rear elevational view thereof; and

FIG. 9 is a bottom plan view thereof.

The broken line showing of the deck, wedges, exemplary comb, the banana plug and electrode assembly and attaching hardware in FIGS. 1-9 is for illustrative purposes only and forms no part of the claimed design.