Fig. 5.
Comparison of unaged and aged golden PVAc paints: (a) values of O/B; (b) values of O/A; PVA, Mowilith® 50; NA, nickel azo yellow; CR, cadmium red dark; BU, burnt umber; CB, cobalt blue; TW, titanium white; 1, unaged, 2, aged.
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