15% Off A Single Item
Use Code: FALL15    Shop Now

Text Us 952-260-4404

FermagraF°™ Adhesive LCD Thermometer

More Views

FermagraF°™ Adhesive LCD Thermometer

SKU: 41990

FermagraF°™ — the newest innovation in thermometers. Round for easy placement on the Big Mouth Bubbler® or your fermenter of choice.

  • Bright blue color is easy to read at a glance.
  • Includes temperature ranges for beer and wine styles.


Keep your fermentation on track with the FermagraF°™: purposefully designed to adhere ​to​ your Big Mouth Bubbler® fermentor or other​ fermentation vessel. This thermometer uses liquid crystals to indicate temperature within ±2°F ranging from 46°F to 84°F. The new circular design is meant to keep the information you need in one compact space so that you can quickly read your fermentation temperature at a glance.

In addition, the FermagraF°™ has clearly marked fermentation temperature ranges for Lagers, Ales, and Belgian Ales, and your Red and White wines so that you can always ensure that your yeast is kept nice and comfy.

Dimensions: 3" x 3"
Details & Instructions

Additional Information

3.4 / 5.0
17 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Works Well Just Need Light
Works well, just need to shine a flash light on it.
August 17, 2019
2 months ago
the right size to fit between the ridges on the carboys
May 9, 2019
5 months ago
The temperature never really shows up. I liked the old strip thermometers much better. The two I bought are useless
January 23, 2019
9 months ago
Easy to read, measures temp well. Accurate so far.
January 17, 2019
8 months ago
Just wish it was bigger
December 10, 2018
10 months ago
Good, but not great
Nice looking thermometer, but not as easy to read as the other ones I own (continuous adhesive strips). I wouldn't buy it again.
August 5, 2018
over 3 years ago
Laid out really well and easy to read. Only complaint is that the temps are kind of hard to see unless you shine a light on it. Would be nice if the numbers were a little brighter
May 2, 2018
1 year ago
Simple, easy way to monitor the temperatures in your carboys at a glance without the hassle of traditional thermometers
April 4, 2018
1 year ago
Like a glove
Is how it fits on a Big Mouth Bubbler. Seems fairly accurate in that with an external reading of 52ish, I got an actual of 50.5 from thermometer directly in sample.
March 13, 2018
1 year ago
I don’t like this thermometer, but it helps.
First, it worked good, I can see my beer between 70 F and 68 F for 2 weeks, but now that I needed it cooler, some days I can’t read this thermometer, I can’t see the correcto grade because it’s so lightly... but TODAY is a great day because I can read it... I can see it in 50 F.... so, It’s not the best thermometer but having nothing would be worst.
User submitted image
User submitted image
February 27, 2018
Customer Q&A
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 2 questions Browse 2 questions and 15 answers
Is this thermometer for one use only?
Mario R on Aug 4, 2018
BEST ANSWER: You apply this to the outside of your carboy (glass or plastic) and you're good to go. It has adhesive on the back but is not meant to be pulled off and moved to another vessel. Do not store your carboys where they are exposed to extreme heat and they should last for years. Cheers.
Is there one place better than another to place it on the Bubbler?
A shopper on Dec 11, 2016
BEST ANSWER: I feel it is best to have the guage near the middle of the carboy where most of the wine is.

Call Us 888-449-2739

Text Us 952-260-4404

Please wait...

Your selected product has been added to your Cart.

Continue Shopping Go To Cart