From chemistry-request@ccl.net Thu Oct 24 19:21:55 1991 Date: Thu, 24 Oct 91 18:53:38 EDT From: Network Mailer Subject: Undelivered mail To: Status: R I have a question about an old fashioned subject. As an undergraduate in pharmacy, I recall using a "gravimetric factor" in a formula which included the barometric pressure and temperature to compensate for the buoyancy of air upon a sample being weighed for quantitative analysis. As part of some other work, I wish to review this subject and I have not readily found a recent reference; although I have seen some tables. I wonder whether this correction is still done and where it is described in "prose." Thanks.