The Fermometer™ is a liquid crystal display thermometer designed to monitor the temperature of the fermentation process with convenience and precision and without the sanitation concerns of immersion thermometers. It has a temperature range of 44 to 86 degrees F with temperature indicators every 2 degrees. Interpolation allows for one degree temperature determinations. It sports suggested ranges for the fermentation of both ales, lagers, Belgian ales and red and white wines.
The Fermometer is easy to use. Simply peel off the paper on the back and attach to the outside of your fermenter with the self-adhesive backing. Be careful. Once you stick it on, it won't come off without damaging it. It is best to stick it at mid-height on your fermenter to average out any stratifications in temperature that may occur once the fermentation calms down.
Reading the temperature is straight forward. If one crystal is highlighted in green, it is that temperature. If two adjoining crystals are highlighted in blue and tan, it is the temperature in between.
The Fermometer was designed to provide years of trouble free service. The Fermometer™ is water resistant, not water proof. While it can easily be rinsed or washed with traditional cleaning and sanitizing solutions, it should not to be continuously immersed for extended time periods. That includes using t-shirts as evaporative coolers. Such exposure will result in water seeping between the laminate layers and discoloring the crystals. Keep your Fermometer out of direct sunlight for extended periods of time. Like beer, liquid crystals do not like ultraviolet light.