Heritage Science

Table 3 RGB data before (1, 2, 5 and 6) and after (3, 4, 7 and 8) the cleaning assay

From: Green chitosan: thiourea dioxide cleaning gel for manganese stains on granite and glass substrates

POINTS	R	G	B	\|υ\|	\|υ\|_ac/\|υ\|_bc
1	150	89	26	292	0.40
3	209	185	159	117	0.40
I	249	249	249
2	209	173	124	146	0.42
4	229	216	194	62	0.42
II	246	246	245
5	195	162	110	171	0.26
7	233	227	212	44	0.26
III	248	248	248
6	133	99	70	256	0.28
8	211	209	195	72	0.28
IV	246	247	245

R = red, G = green, B = blue, |υ|_ac = magnitude of a vector after cleaning and |υ|_bc = magnitude of a vector before cleaning

Back to article page