Re: baume meter

[Greg Schmitz <gws1@columbia.edu>]

On Wed, 29 Aug 2007, Judy Seigel wrote:
> 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)...
Hi Judy!  -greg

from:
<http://www.waterandwastewater.com/www_services/ask_tom_archive/density_measurement_theory_and_practice.htm>

Hydrometers

Hydrometers represent the simplest and most economical method of measuring 
density. A hydrometer is a calibrated glass float, which incorporates a 
scale for direct reading. Typically, a hydrometer is "spun" into a sample 
and eventually stabilizes at a certain height relative to the liquid 
surface. The SG [specific gravity] is read directly frorm the scale on 
the tube. Hydrometers may be calibrated in one of several specialized scales:

* Alcoholometer: This hydrometer is used for testing alcoholic 
solutions. The scale is calibrated is percent of alcohol by volume

* Ammoniameter: For testing Ammonia solutions. The scale is calibrated 
in 0°-40 deg.

* Barkometer: Used in the tanning industry. The scale is 0°-80 deg.

* Baume': Two types are in use- Heavy Baume', for liquids heavier than 
water; and Light Baume', for liquids lighter than water. Scales are 
available to 90 deg.Â

* Brix: Used in the sugar industry for determining the percentage of 
sugar in solution. Degrees Brix is percent sugar.