Making the solutions
Now add distilled water to both beakers in a ratio that you have 0.35 to 1.05 ounces of chemical in every seven tablespoons of water.
The Salt Bridge
This is a bridge that you prepare by preparing a salt solution with 0.35 ounces of table salt dissolved in seven tablespoons of water. The solution is put inside the U shaped plastic tube which is provided with cotton wads stoppers on both ends. Finally, both ends of the tube should be immersed in each of the beakers in form of a bridge.
Connecting the Voltmeter
In order to ensure that the Electrochemical cell is complete, connect a voltmeter between the Zinc and Copper strips. If the current is flowing, there will be deflection or reading on the voltmeter. The voltage produced may not be very high but it can be increased by adding more such cells.