411 REFERENCE · Wiktionary
Raschig ring
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
thumb|right|Raschig rings one inch (25 mm) ceramic
Etymology
Named after their inventor, German chemist Friedrich Raschig, who patented them in 1914.
Noun
Any of a number of pieces of tube, approximately equal in length and diameter, used to form a packed bed within columns for distillations and other chemical engineering processes.
en eponyms