Ambient room temperature is never the same temperature as
fluid. Fluids usually have a lower temperature than the
surrounding air. Measuring temperature with a liquid thermometer
is strongly recommended.
Check the calibration of your hydrometer. At 60°F, H20 (soft)
should read 1.000 S.G. Remember that different temperatures
will give variations in S.G. readings. Keeping liquid temperatures
between 68 – 74°F will allow consistent S.G. readings.
Keep fermentation vessels away from “heat-sinking” areas, i.e.
concrete floors, windows, doors, walls with exterior exposure, and
any areas where temperature can vary.
Brew belts or heating pads (used with a blanket) are excellent
ways to ensure constant fermentation temperature.
TEMPERATURE AND
FERMENTATION
Keep Your Carboys Toasty
EVERY YEAR, when the days get shorter and the mercury plummets, the number of
phone calls to BREW KING with problems of stuck fermentation always balloons.
Many times the simple explanation is temperature. Remember that yeasts, just like
people, get pretty sedate in cold weather. The result can mean sluggish or stuck
fermentations, excessive carbonation
of wine and/or prolonged clearing
periods. In order to reduce these
possibilities, please ensure a constant
temperature of 68 – 74°F for your wort
or must, and be sure to keep the
following points in mind:
If you do have slow or stuck fermentation, try moving your beer or wine to a warmer
area, give it a gentle stir, or use a yeast starter formula (ie. Nutravit) to re-start your yeast.
Paying extra care and attention to the points above will go a long way to ensuring
consistent success (and reducing any unwanted hassles).
< 45°F (7°C)
Stuck
Fermentation
50 – 60°F
(10 – 15°C)
Slow
Fermentation
65 – 75°F
(18 – 24°C)
Normal
Fermentation
80 – 115°F
(27 – 46°C)
Very Rapid
Fermentation
120°F
(49°C)
Death
FOR POSTING
YEAST AND TEMPERATURE
