Wash your hands and forearms thoroughly under hot water, using an antimicrobial skin cleanser. Dry your hands and forearms with a fresh paper towel that has not yet been touched. Turn off the faucet using the paper towel, not your bare hand. Do not use a cloth towel or rag, even if it has just been cleaned. Sometimes bacteria lingers on cloth materials throughout several washes.
Ask an assistant who followed the procedures of Step 1 to open a new box of rubber gloves. This will keep your hands free from any contaminants that the outside of the box might have. Reach into a box of rubber gloves with one hand, and remove a single glove. Position the glove around a hand until it fits firmly. Then reach into the box again with your gloved hand and grab another glove. Position the second glove around your other hand until it fits firmly.
Ask your assistant to open a box of presterilized cotton swabs. Reach into the box with either hand and remove a single swab.
Ask your assistant to open a bottle of isopropyl alcohol, which is a colorless, flammable, organic chemical compound liquid. Hold the cotton swab over the sink with both hands so you don't drop it. Have your assistant pour a small amount of isopropyl alcohol over the cotton swab until it is entirely wet.