gradocol membrane
noun
grad·o·col membrane
variants or less commonly gradacol membrane
ˈgradəˌkȯl-,
-käl-
: a collodion membrane prepared from a solution of collodion in alcohol and ether in such a way as to have a predetermined average pore diameter and used especially in ultrafiltration (as of a virus suspension)
Word History
Etymology
German gradokol, from grado- (from International Scientific Vocabulary grade) + kollodium collodion