J Gen Physiol. 1940 Sep 20;24(1):1-5. doi: 10.1085/jgp.24.1.1.
The Journal of general physiology
K Sollner, I Abrams
PMID: 19873195 PMCID: PMC2142072 DOI: 10.1085/jgp.24.1.1
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.