1. It is impossible to reproduce Loeb's observations on anomalous osmosis with membranes prepared from relatively pure brands of collodion, whereas positive effects can be obtained using collodion containing acidic impurities.
2. The inactive (purer) collodion membranes may be activated by oxidation with NaOBr solution.
3. Properly oxidized membranes give much greater anomalous osmotic effects than those described by Loeb.
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Copyright, 1940, by The Rockefeller Institute for Medical Research
1940
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