Re: baume meter
On Wed, 29 Aug 2007, zphoto@montana.net wrote: Judy, http://www.coleparmer.com/catalog/product_index.asp?search=baume&x=41&y=10 Thanks... I hadn't thought of that, probably because I'd just lugged a few quarts of ready-mixed to school... If you're mixing them specially that would be an issue...The reason for the test tube vs. the fatty graduate--you have to fill a greater volume in the bigger diameter container. And now that you mention it, I remember "hydrometer" -- which is what they taught us in freshman psychology: recognition is easier than recollection... (but not to be confused with hygrometer, which measures humidity)... cheers, Judy 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 beencommunicating 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. JudyAssistant 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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