i don't know if there are different kinds of hydrometers, but the one i bought was from a wine making store,so my question is what mark do i go by for baume, is it balling, or potential alcohol, or possibly specific gravity, hummm.I'm useing large drums for pickle etc, and i don't know how many gallons (litres) it is don't have time to pour one gallon at a time. Maybe when i'm caught up or back on schedule,my point is then i could use the one pound per gallon formula,
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for most "pickle" solutions will call for 50% density, specific gravity.
The Baume scale is graduated in amounts of specific gravity - or the amount of Alum dissolved into solution. Obviously Salt is also involved - but a 7.9 reading is what most Alum Tanners go by.
Not familiar with the use of Baume scale but specific gravity is a ratio of the density of a particluar solution to the density of pure water. Specific gravities are therefore unitless. Density is defined as "weight per unit volume" (w/v) and will have units associated with the number such as "gm/ml".
After a little researching:
The Baume supposedly has two scales one of which must be indicated when giving the reading...There is a "heavy" and a "light" scale. The heavy scale being for solutions that have a specific gravity that is greater than that of water and The "light" scale being for solutions that have densities lighter than that of water.
Since we're dealing with water solutions/acids/salts and chemicals added to water one must assume that the "Heavy" scale is used.
The Baum reading is mathematically explained as follows:
BH(Baume Heavy) = 145 - (145/s.g.)
The number that Bruce gave you therefore corresponds to a solution with a specific gravity of 1.058.
7.9 = 145-(145/s.g.)
or: -137.1 = -145/s.g.
then: -137.1 x s.g. = -145
and: s.g. = -145/-137
therefore: s.g. = 1.058
Hope that helps..
Tell us the diameter of your drums and the depth you plan on filling them to and I'm sure we can calculate the volume..
my drum is 42" in height 22" across and i fill up to 30" hey thanks alot guys really appreciated
...to where you will fill it at the 30" mark is 186.9 Liters or 49.4 gallons. Total capacity at the 42" mark is 261 Liters or 69 gallons.
That's a big barrel!