Posted by John Walker on June 26, 2001 at 16:37:38:
In Reply to: Thanks Bill.... posted by seahunt on June 26, 2001 at 05:52:57:
I don't know if you noticed or not but these test started at the eqivalant pressure of 50 fsw. Another test shows considerable change in filterability in only a couple of hours. Suggesting the possibility of reduced rigidity. Even more so with nitrogen based mixtures over helium.
If anyone is intersted I will share more interesting papers on this subject thanks to Mr. Pettey.