If an acidic porcelain etch is spilled on a patient's arm What should be done first?

Wipe the etch off the forearm immediately. Follow by wiping the forearm with lots of gauze soaked in water. Advise the patient of the accident, show them where it occurred and advise them to watch for any reaction (redness, swelling, itching, etc.) and to notify you immediately of any symptoms. Reassure the patient that nothing is likely to occur but this is precautionary only. If possible, photograph the forearm before the patient leaves the office. Thoroughly document EVERYTHING about this incident in the patient's chart.