UN Permanent Marker
Vivian Tan
R C Palmer Secondary
Floor Location : J 172 D

Four removal methods, acetone, baking soda and water, rubbing alcohol, and water, were tested for their ability to remove permanent marker ink completely from the Palmer simulated washroom stalls (galvanized metal and oil-based paint). The prediction was that the rubbing alcohol and the acetone would be the most effective methods as they are found in cleaning agents (e.g. laundry detergent and nail polish remover) and the water would be the least effective as the permanent marker ink was claimed to be water-resistant. When finished painting the oil-based primer and oil-based paint on the three metal sheets and waiting two days for the paint to dry, twelve 6 cm by 1 cm permanent marks, four per colour (black, green, red) were drawn on each metal sheet and then removed after specific time periods (one day, two days, and four days). The hypothesis was partially correct as the rubbing alcohol and the acetone were the two most effective removal methods, but since the acetone had a tendency to remove the paint along with the permanent marker, the rubbing alcohol was the most effective method. Since rubbing alcohol is cheap and found in many stores, it can help maintain the clean appearance of public washrooms and save money from having the washroom stalls repainted.