The wettability of a surface can be measured.
It is safe because it does not contain any harmful substances. Surface tension (dyne) level (mN/): 30, 32, 35, 38, 41, 44, 48, 56 (1 of each)
Quantity: 1 set (8 pieces)
Model number: Variety
RoHS2 (EU)2015/863 compliant [About RoHS]
