All moral rights asserted. Recolouring or alteration of the image is prohibited without permission. Differential interference contrast light micrograph of FFP2 (filtering facepiece 2) mask material. FFP is a European standard. FFP2 masks filter at least 94 percent of airborne particles. This is the middle layer, which consists of a fleece (thick lines) onto which nanofibers are spun. At only 0.3-0.1 micrometres, these are so fine that even a very thin layer provides a very good filtration rate while allowing easy breathing. The droplets help to fix the fibres to one another. Magnification: x200 when printed at 15 centimetres wide.

px px dpi = cm x cm = MB
Details

Creative#:

TOP27989781

Source:

達志影像

Authorization Type:

RM

Release Information:

須由TPG 完整授權

Model Release:

N/A

Property Release:

N/A

Right to Privacy:

No

Same folder images:

Same folder images

Restriction:

All moral rights asserted. Recolouring or alterationof the image is prohibited without permission.