Place 50cm3 of 1M ZincII sulphateVI in 100cm3 beaker Put a clean zinc rodplate into the solution Place 50cm3 of 1M CopperII sulphateVI in another 100cm3 beaker Put a clean copper rodplate of equal area length x width with Zinc into the solution Connectjoin the two metalsto a voltmeter using connecting wires Dip a folded filter paper into a solution of Potassium nitrateV or sodiumI chlorideI until it soaks Use the folded soaked filter paper to connectjoin the two solutions in the two beakers The whole set up should be as below