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Dramatically demonstrate the chemical activity at the anode and cathode of your electrophoresis apparatus. The color changes at the two ends of the electrophoresis tank will be very striking when no buffer is used. When you add buffer solution during the follow-up run, the color will not change! Students will quickly understand why a buffer solution is used in an electrophoresis apparatus.
Enough materials are provided for seven demonstrations. Requires electrophoresis apparatus and power supply.