Resistive touchscreen surface material is PET (polyethylene terephthalate, also called polyester). Capacitive touchscreen surface material is tempered glass. Both surfaces can be cleaned with the following method.

1. Using a cleaning solution of 75% alcohol or 1:100 diluted bleach, spray the solution on a dry cloth.
2. Gently wipe the HMI’s screen.

Note: Avoid spraying the solution directly onto the HMI.