Weisz ring oven

Weisz ring oven

[′vīs ′riŋ ‚əv·ən]
(analytical chemistry)
A device for vaporization of solvent from filter paper, leaving the solute in a ring (circular) shape; used for qualitative analysis of very small samples.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.