Tell Me More! Masks under the Microscope
The image on the left is a mask viewed under an electron microscope. Find the three images below that are from the same mask!
There are lots of holes. But how big are they?
Which mask was under the electron microscope?
Now, which mask were those images taken of?
There's one correct answer.
- N95 mask (non-woven fabric)
- Disposable mask (non-woven fabric)
- Polyurethane mask
Properties of polyurethane masks
Polyurethane is aerated during processing, giving it a sponge-like structure. The many holes keep the mask well-ventilated, and they also collect particles via static electricity.