Displays the refractometer tool which can be used for three things:
Calculating the specific gravity of unfermented wort from a refractometer
reading.
Calculating the gravity of wort while it is fermenting from the original
gravity and a current refractometer reading.
Calculate the original gravity, alcohol and other parameters from the
final gravity and a final hydrometer reading.
Use
Select the Refractometer Tool tab on the Tools menu.
Set the refractometer calibrations if you have not already done so.
Select the type of calculation you want.
Enter the refractometer reading and hydrometer or starting gravity if
applicable.
Dialog Description
Calculation - The type of calculation to perform:
Unfermented Wort Gravity - Calculates the gravity of
unfermented wort from a refractometer reading.
Fermenting Wort Gravity - Calculates the gravity of partially
fermented beer from the current refractometer reading and the original
gravity of the wort.
Finished Beer ABV/OG - Calculates the original gravity, alcohol
content and other parameters from a final refractometer reading and
final hydrometer reading.
Refractometer Reading - A current reading taken of the beer or wort
with your refractometer.
Hydrometer Reading - The current reading of the finished beer taken
with a hydrometer. This is used only when calculating Finished Beer
ABV/OG.
Original Gravity - The original gravity of the unfermented
wort. Required when calculating the gravity of wort while it is
fermenting.
Corrected Gravity - The corrected gravity of the unfermented wort
or wort that is fermenting.
Calibrate Refractometer Settings - Press this button to bring up
the calibration dialog. You
need to calibrate your refractometer before using it by following the
directions in this dialog.
Percent Alcohol by Volume - The percent of alcohol content in the
beer on a per-volume basis.
Percent Alcohol by Weight - The percent of alcohol content in the
beer measured on a per-unit weight basis.
Apparent Attenuation - Attenuation is a measure of how much of the
sugar was fermented by the yeast. Apparent attenuation is the
unadjusted percent of sugars fermented by the yeast. For beer brewing,
apparent attenuation is much more commonly used than real attenuation.
It is defined as:
Appt_Attenuation = (OG-FG)/OG * 100
where OG, FG are in points.
Real Attenuation - The real attenuation is how much sugars were
really fermented by the yeast. Because alcohol is lighter in specific
gravity than water, an adjustment must be made for the alcohol content when
assessing the actual percentages of sugar fermented. The real
attenuation will always be a lower number than the apparent attenuation.
Total Calories per 12 oz - The total estimated calories for a 12 oz
(0.35 L) glass of beer.
