Keywords: Man Group portrait (detail).jpg Artwork Creator Cornelis de Man s 1670 oil canvas Institution National Museum Warsaw 1 accession number 27 object history credit line The laboratory room refers to the workshop of Johannes Conradus Barchusen at the University of Utrecht own BurgererSF See below PD-old-100 DEFAULTSORT 1670s; Group portrait in a chemist's house Cornelis de Man Details of portrait paintings in the National Museum in Warsaw Chemists from Poland History of chemistry Laboratories in art Laboratory glassware Johann Conrad Barchusen |