I am familiar with osmosis. I also realize it takes some time for material to pass from the area of high concentration to the area of low concentration, and when high surface tension is involved it takes even longer. With a high enough surface tension it may not even occur. High sustained pressure on the low concentration side will speed up the process, but enough pressure to affect the process would blow out the condom.
Now, I don’t know about your habits – but I generally removed the condom rather quickly after use.
Dear R. Scott,
One can argue the effects of surface tension but the issue has really been settled by the Mariposa Institute Study.
The study used radioactive particles, the size of so called 'HIV', under simulated 'use' conditions.
Around 100 samples of each major condom brand were tested.
Results varied greatly between brands but failure rates as high as 100% were recorded.
The study was commissioned by Durex and so cannot be considered to have an anti condom bias.
I have the results somewhere on file and can post them if you are interested.
Best wishes,
David