Fig. 10From: A multi-analytical study of historical coated plaster surfaces: the examination of a nineteenth-century V&A cast of a tombstoneFT-IR spectra acquired in ATR mode (gypsum plaster reference) (a), and in DR of polyester casting resin reference (b) and from layer 2 of sample 6 (orange line in c) and sample 9 (blue line in c)Back to article page