Comment stsetch SNF 2008-05-23 15:09:57: Schmutz on back of wafers

latta at latta at
Fri May 23 15:09:57 PDT 2008

I think there is some material on the lipseal.  A couple of my wafers have 'stuff' on the backsides after they went in clean.  This is not a large enough problem to affect the He flow and pressure, yet.

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