TABLE II

Solution Viscosity and Contact Angle Measurements of Various Nozzle Materials

Liquid	Viscosity (cP)	Contact Angle (degrees)
Liquid	Viscosity (cP)	Glass	Stainless Steel	Silicone	Polypropylene	Teflon®
Water	1	<20^{^a}	66.4 ± 15.7^{^a}	97.2 ± 2.8^{^b}; 108^{^c}	104 ± 2^{^d}	122.3 ± 9.4^{^a}; 108–111 ± 3^{^d}
mAb Formulation	9	<20^{^a}	58.8 ± 7.4^{^a}	83.3 ± 6.2^{^a}	ND	83.4 ± 1.5^{^a}
60% Sucrose solution	60	<20^{^a}	71.7 ± 20.9^{^a}	95.2 ± 1.2^{^a}	ND	97.2 ± 2.4^{^a}

ND, not determined.
↵a Measured in this study.
↵b Measured in this study on siliconized glass.
↵c She et al., 2000 (14); Colas et al., 2004 (15).
↵d Xu et al., 2013 (13).