Table 1.

Mass density (ρ), surface tension (γ), viscosity (η), capillary length (κ⁻¹) and (apparent) contact angle (θ_E), for the different types of liquids used.

liquid	ρ (kg m−3)	γ (mN m−1)	η (Pa s)	κ−1 (mm)	θE
water	103	72	10−3	2.7	66°−75°
ethanol	789	22	1.2 × 10−3	1.7	<10°
olive oil	911	32	8.4 × 10−2	1.9	25°−32°