Table 2.

PVP mass-loss rate.

RL/PVP	Before Testing (g)	After the Test (g)	Mass Loss (g)	Mass-Loss Rate
2/2	0.093	0.069	0.027	29.03%
3/3	0.170	0.133	0.037	21.76%
4/4	0.266	0.217	0.049	18.42%