When removing fingerprints, a cleaning solution consists of one part isopropyl alcohol and what else?

Using a cleaning solution that consists of one part isopropyl alcohol and one part distilled water is effective for removing fingerprints and other contaminants from surfaces. Isopropyl alcohol is a powerful solvent that can dissolve oils and grime, which makes it ideal for cleaning surfaces like touchscreens, control panels, and other avionics equipment where fingerprints may accumulate.

Diluting isopropyl alcohol with distilled water helps to lower its concentration, making it less aggressive while still maintaining its cleaning properties. Additionally, using distilled water ensures that no minerals or impurities from tap water are introduced to the sensitive surfaces being cleaned, which is crucial in avionics maintenance where integrity and reliability are paramount.

Other substances, such as vinegar, bleach, or hydrogen peroxide, can be too harsh or corrosive for sensitive electronic components and may lead to damage or degradation of the surfaces being cleaned. Thus, the combination of isopropyl alcohol and distilled water strikes the right balance for cleaning while ensuring the safety of avionics equipment.