1. Department of Chemistry and Technology of Polyurethanes, Institute of Materials Engineering, Kazimierz Wielki University, J. K. Chodkiewicza 30, PL 85-064 Bydgoszcz, Poland
2. Department of Technology and Engineering of the Food Industry, Faculty of Chemical Technology and Engineering, Bydgoszcz University of Technology, PL 85-064 Bydgoszcz, Poland
3. Syl & Ant Instruments, ul. Pyskowicka 12, PL 44-172 Niewiesze, Poland