Re: baume meter
Judy, http://www.coleparmer.com/catalog/product_index.asp?search=baume&x=41&y=10 The reason for the test tube vs. the fatty graduate--you have to fill a greater volume in the bigger diameter container. I found $24.50 + shipping not too big a deal to get an accurate idea of what different baume gums feel like. Actually, the correct name is an hydrometer I think...because googling "baume meter" has problems :) BTW it isn't digital, it is kindof a weird looking contraption, too. Not terribly high tech. Chris ----- Original Message Follows ----- From: Judy Seigel <jseigel@panix.com> To: alt-photo-process-l@usask.ca Subject: baume meter Date: Wed, 29 Aug 2007 14:23:22 -0400 (EDT) >On Wed, 29 Aug 2007, Christina Z. Anderson wrote: > >> The answer to your question is to buy a $30 baume meter >> from Cole Parmer and also a test tube tall enough so it >> can be submerged mostly (about a foot). I've been >communicating with Art Chakalis about this and he has a >measure of > >Chris, I'm curious about this $30 "baume meter." A long >time ago (tho not so long as it could have been) I used a >baume meter from the chem department at school... It was a >beautiful little thing, probably from about 1890, some >simple but delicate/intricate mechanical operation.... and >it was all I could do to refrain from stealing it. (Tho I >did refrain, or maybe I just lacked courage -- which was >dumb in the long run, because a year later they closed >that dept & the darling old thingum was probably dumped). >I was trying to see if the differences I found in behavior >among commercial gums (quite striking) were from different >baume -- they weren't, as all were about the same, as was >the pH. I finally decided the differences were from >preservative and/or source of the acacia, which I'd never >know for sure, so live with it. > >But that "thingum" was a simple little device, used (if >memory serves) also in winemaking. I can't see a >contemporary version costing $30 (maybe $6)-- so I'm >imagining there's now a digital instrument. I ask out of >curiosity as I have no plans to abandon my nice commercial >live-forever gums. But what is the $30 baume meter? >Battery operated? Hard drive attached? And Cole Porter >-- or I guess that's Cole Parmer. They have a website? > >Have you used this instrument? .... I remember the rather >expensive pH meter I bought that never worked as well as >the strips on a roll... which of course may have been my >fault for not properly titrating the solution. There's >probably an adage about that... (probably Occam's razor, >tho that is of course wrong). > >Meanwhile, TIA & happy labor day > >PS. What did work very well in the chem lab was, not a test >tube, but a rather fat graduate (the glass, not the human >kind). You could fit whatever you wanted in it. > >Judy Assistant Professor of Photography Photography Option Coordinator Montana State University College of Arts and Architecture Department of Media and Theatre Arts, Room 220 P.O. Box 173350 Bozeman, MT 59717-3350 Tel (406) 994 6219 CZAphotography.com
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