MOESM1 of Non-invasive identification of polymers in cultural heritage collections: evaluation, optimisation and application of portable FTIR (ATR and external reflectance) spectroscopy to three-dimensional polymer-based objects

Additional file 1. List of major peaks for all spectra including: polymer references sheets with ATR clamped and ER sampling techniques, case study objects with ATR clamped, handheld and ER sampling techniques, and KKT spectra.