| Method 2 - Mild Cleaning for Light Contamination (smudges, fingerprints) I. Dampen an unused cotton swab or a cotton ball with acetone or i-propanol. II. Gently wipe the surface with the damp cotton. Do not rub hard. III. Drag the cotton across the surface just fast enough so that the liquid evaporates right behind the cotton. This should leave no streaks. If this step does not remove the contamination, continue to Method 3. Note: • Reagent grade acetone and i-propanol are recommended. |