>Thanks, Ron. That was very informative and indeed it could be pure silicon >and still have different viscosities! > >Tom Sivak Bizarre stuff, ain't it? I didn't know any of that either a couple of hours ago, until Google rode in with the info. That's what this autistic savant Internet is for, to make generally useless but intermittently interesting stuff available in abundance, and to eternally frustrate most attempts at getting real and usable technical information. Ron N
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