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Table 3 Ageing conditions for PU sample HS464

From: Assessment of historical polymers using attenuated total reflectance-Fourier transform infra-red spectroscopy with principal component analysis

Sample name Temp / °C RH / % Light exposure Time / h
PU 1 (ref) - - - -
PU 2 50 50 No 24
PU 3 50 50 Yes 24
PU 4 50 50 No 144
PU5 50 50 Yes 144