Fig. 6From: Scientific analysis of tie luo, a Qing Dynasty calligraphy artifact in the Palace Museum, Beijing, ChinaPyrogram of reddish pigments obtained by THM-Py-GC/MS indicating the use of animal glue (no. P1–P10), drying oils (no. O1–O11) and beeswax (no. W1–W13) as binding mediaBack to article page