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Watching paint dry, ultra-long duration experiments using the Arrow consumable ATR

This note demonstrates the use of the Arrow silicon ATR system for batch, long-duration experiments on paint samples following the principles of ASTM STP1119, a commonly used transmission method. Arrow makes preparing sample batches for ATR measurement feasible for the first time and is a simple and cost-effective alternative to using multiple KBr windows for this task. We have also shown that spectra recorded on Arrow are amenable to spectral processing using chemometric tools such as PCA.