[Physicist]

If dilution doesn't remove the effect of the salt, how ever did they clean the beaker in which they ran the tests? Surely it must have touched the pitch of undistilled water at some point in its life, which means it once contained some concentration of salt. Anything they did to it from then on was strictly a matter of successive dilution...and yet, they managed to get a "null result" from distilled water.

Hmmm....

[PatrickHenry]

If dilution doesn't remove the effect of the salt, how ever did they clean the beaker in which they ran the tests?

If you hadn't gone and done that, this thread could have continued for hundreds of posts.