Hi Jim;
Ok I made up a graph by adding water one ml at a time to 90 ml of pure
methanol. This was done at 23 degrees C which is the current
temperature in my work area. The hydrometers are calibrated for 15
degrees so this is more practical for my purposes. As far as Bob's
comment on what
Joe Street wrote:
Hi Jim;
Ok I made up a graph by adding water one ml at a time to 90 ml of
pure methanol. This was done at 23 degrees C which is the current
temperature in my work area. The hydrometers are calibrated for 15
degrees so this is more practical for my purposes. As far
On Sep 4, 2006, at 7:19 PM, JJJN wrote:
Would you have some baseline readings? and can you tell 85% from 95%
with one of these?
They typically read off in percentage by volume of alcohol, as well as
proof and Baumé (whatever that is :-)). You can easily tell 98% from
99%.
-K
For liquids heavier than water:
0 °Bé = distance the hydrometer sinks in pure water
15 °Bé = distance the hydrometer sinks in a solution that is 15%
sodium chloride (salt, NaCl) by mass.
To convert from °Bé to specific gravity at 60 degrees Fahrenheit:
specific gravity = 145/(145 - °Bé)
Hi Jim;
Yes I got a couple of hydrometers 0.79 to 0.90 range and rather than try
to find calibration tables for temperature etc I decided the thing to do
is take some fresh pure methanol and measure it's SG at room temperature
(about 20 degrees C in my place) and then add some measured amounts
a confounding variable in determining water in methanol (recovered
from the glycerin cocktail)
depending on the distillation set up besides water and methanol you
will also get glycerin- depending on the temperature and number of
theoretical plates in your still. How a small amount of
On Sep 3, 2006, at 9:48 PM, JJJN wrote:
Does any one know of a good test to determine the amount of water in
methanol?
The hydrometers you can get at a homebrew shop (or on the web)
work fine for methanol -- the densities of methanol and ethanol are
practically the same.
-K
Would you have some baseline readings? and can you tell 85% from 95%
with one of these?
Jim
Ken Provost wrote:
On Sep 3, 2006, at 9:48 PM, JJJN wrote:
Does any one know of a good test to determine the amount of water in
methanol?
The hydrometers you can get at a homebrew shop (or
