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Surface tension components of glass and PTFE
| θ W | θ F | θ D | γ LW | γ - | γ + | γ AB | γ S | |
| Glass | 10° | 17° | 61° | 28 | 55 | 4 | 30 | 58 |
| PTFE | 109° | 95° | 83° | 15 | 1.5 | 0 | 0 | 15 |
Contact angles measured on glass and PTFE with water (θw), formamide (θF) and diiodomethane (θD); and derived Van der Waals, (γLW), electron-donor (γ-), electron-acceptor (γ+) and polar (γAB) components of the materials surface energy (γS) expressed in mJ·m-2.
