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![SOLVED: A sample of industrial water is tested in the field using the apparatus as shown on the right in which the platinum-sensing and calomel reference electrodes are attached to a potentiometer ( SOLVED: A sample of industrial water is tested in the field using the apparatus as shown on the right in which the platinum-sensing and calomel reference electrodes are attached to a potentiometer (](https://cdn.numerade.com/ask_images/cf6beb039fe14b3db67cb24393f8f691.jpg)