The open cell foam is not only microporous, but its polymeric substance is also extremely hard, meaning that it works like sandpaper but on a smaller scale, getting into tiny grooves and pits in the subject being cleaned.
The open cell foam is not only microporous. Its polymeric substance is also extremely hard, meaning that it works like sandpaper but on a smaller scale, getting into tiny grooves and pits in the subject. This subject is being cleaned.