Scientists present a new optical method to study the drying process of varnish based on immersion solid matching technique. The principle of the method is to match the refractive index of dry varnish with the added particles, making the dried varnish optically transparent. Niskanen, Ilpo et al., Progress in Organic Coatings, 2019, Vol. 136, p. 105299. 5 billion litres of paints and coatings were consumed in North America in 2018. In a recently published study, thermodynamic data for synthesised ASR products (i.e., Kshlykovite, Na-shlykovite and ...