Fig. 7From: Identification of cellulose nitrate based adhesive repairs in archaeological pottery of the University of Melbourne’s Middle Eastern archaeological pottery collection using portable FTIR-ATR spectroscopy and PCATwo types of PVAc IR spectra found in adhesive samples obtained from ME and Cypriot collections. a Vessel 1970.0453, bowl, Jerusalem Cave 1, Palestine. PVAc with no peak at 1658 cm−1 (s1305). b Vessel 1970.0449, juglet, Jerusalem Cave 1, Palestine. PVAc with peak at 1658 cm−1 indicating presence of CN (s1367)Back to article page