Dell has provided guidance on cleaning and disinfecting Dell-branded equipment, including the display screens that form the primary part of the COWs. Critical information from the guidance includes:
The recommended solution is a mixture of 70% isopropyl alcohol / 30% water.
Avoid using any of the following chemicals or products containing these chemicals as they will cause permanent damage to some product surfaces:
There is currently no information (as of May 2020) on the use of UV-C for cleaning DELL equipment. The recommended cleaning methods outlined here may cause some visible cosmetic changes but have undergone testing for efficacy and effects on the equipment.