How do I clean the sensors?

This article is only focused on cleaning instructions for the 19mm sensors.

The sensors’ surface is made out of acrylic (PMMA). It is generally very tolerant to chemicals. However, repeated and/or extended chemical exposures, heat, abrasion, or any combination of these could degrade the visual appearance of the surface. 

Long-term exposure to some chemicals, in particular alcohols, may soften the surface. Combined with strong mechanical abrasion (like vigorous rubbing or scraping), such chemicals may, after a while, damage the surface of the sensor. With that in mind and to prevent the chemicals to be absorbed into the surface, the exposure time to the chemicals should be kept to the bare minimum.

The chemical resistance of the surface depends on numerous factors, such as:

  • concentration of the cleaner/disinfectant
  • contact time
  • the temperature of the solution and the acrylic surface. 

Generally speaking, these options can be considered good for cleaning the surface of the sensor:

  • soap and water
  • hydrogen peroxide disinfectants 3%-5%
  • Isopropyl alcohol <70%
  • bleach (household laundry grade - oxygen-based) 
  • microfiber cloths (reduces the risk of scratching plastic).

On the other hand, it is advisable to avoid the following products:

  • ethyl alcohol (pharmacy grade)
  • household bleach (chlorine-based)
  • other stronger cleaners and disinfectants.


These recommendations are based on information we believe to be reliable, but without any guarantees, as conditions and methods of cleaning are beyond our control.