Raschig ring

English

Raschig rings one inch (25 mm) ceramic

Etymology

Named after their inventor, German chemist Friedrich Raschig, who patented them in 1914.

Noun

Raschig ring (plural Raschig rings)

1. 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.