Kenny - Wouldn't that be dictated by the calibration of your SG test equipment? As an amateur vintner my gauge for SG of wine is calibrated for 68 Degrees F. There is an adjustment factor for each degree of variation above calibration temperature, and a separate factor for each degree below calibration temp. Since SG is a relative measure to water a STP it would make sense (to me at least) to normalize all measurements to that. Jeffrey McGlaughlin, CID Engineering Designer Battelle 505 King Avenue Columbus Ohio 43201-2693 (614)424-7582 Phone (614)458-7582 Fax -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Ken Bloomquist Sent: Thursday, May 22, 2008 1:30 PM To: [log in to unmask] Subject: [TN] Specific Gravity for ROSE Tester Good Day All, We are having a discussion about the specific gravity of the 75%/25% solution in our ROSE tester. The question revolves around testing it hot or cold. Our ROSE tester runs at 112 degrees F and would like to know whether we should test the SG at hot or cold. If so what would we expect for a reading? Thanks all, KennyB --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------