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Lab Thermometer

$7.99

SKU# 7409

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All-purpose glass thermometer, reads in 2° increments).

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$7.99

Availability: In stock

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Product Details

Our favorite all-purpose thermometer. Reads in Celsius and Fahrehneit (-20°-110° C, 1° increments; 0°-220° F, 2° increments). Takes readings quickly.

Additional Information
Support Documents:No
Reviews
2.9 / 5.0
18 Reviews
5 Stars
4 Stars
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1 Stars
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6
It's glass don't break it.
Good response time and accurate. But it's glass so handle it as such, this is my second one.
June 7, 2017
Purchased
10 months ago
Dead nuts on!
I have a mortal fear of broken lab gear. I have to have at least two of everything. I bought this, and tested it against my cherished Chico thermometer. It passed every test...
January 22, 2017
Purchased
1 year ago
Good to have
Hard to beat old school thermometer
March 2, 2016
Make sure you know how to use a thermometer
A lot of the negative reviews of this thermometer complain about accuracy. Mine was fine. I can't help but guess some of this may be related to people not knowing how to use a thermometer. I know that sounds goofy, you just stick in the liquid and read it, right? Well, not really.There are two main types of glass/alcohol thermometers, partial immersion and total immersion. The one I got from NB was a partial immersion, but I'm not sure that's always the case; the one pictured in the on-line catalog appears to be total immersion. Partial immersion thermometers will have a line, usually about three inches from the bottom. This is the immersion line, and it marks how deep you put the thermometer into the liquid to get accurate readings. Total immersion thermometers should have printing on them to label them as such, but sometimes they don't. If it isn't marked, but it doesn't have an immersion line, it's probably total immersion. Total immersion thermometers have to be immersed in the liquid as far up as the liquid temperature reading -- i.e., if the water is boiling, the thermometer needs to be in as far as the 212 F mark, or it will read low. There are correction factors you can apply if you can't put it in that far -- Google it if you want to learn how, it's a simple formula. A total immersion thermometer will read several degrees low if only the lower couple inches are in the liquid.Partial immersion thermometers can read incorrectly even if they're immersed to the line. The reason is the calibration assumes the part of the thermometer that's not in the liquid is in room temperature air, which it's not if it's in the steam over boiling wort. This is why total immersion thermometers are generally more accurate if immersed properly. However, the correction for partial immersion thermometers is not huge, so just immerse it to the line; you can get a sense of the error by putting it a pot of boiling water (preferably your brew pot). Wort boils at a slightly higher temp than 212F because of the sugar content. If you're measuring temps close to room temp, then this error is minimal.As far as breakage. . .yes, glass thermometers are fragile, big surprise. I can't see why people complain about it. If you want a thermometer you can bang around, get an electronic or steel shaft thermometer.This thermometer is a perfectly good example of what it is -- a glass thermometer. It has to be used correctly to be accurate. And it's not a stir stick, not matter how tempting it is to use it that way.
April 26, 2013
Just like the ones at school
Had a lot of experience with this type at school, I didn't think to check the calibration, however it did show the boiling point at my elevation (6200') at 198(deg)F, which is about correct without considering barometric P. We must remeber there are many variables with boiling temps, sugars, ions, and additives can increase the boiling temp of a liquid. Angle of view can greatly skew the reading of this type of thermometer, the eye should be level with the reading. I think mine works fine, but I am going to outfit my pot(s) with a dial face thermometer for ease of use anyway.
July 31, 2012
Meh, Consistent...
Reads 4 degrees warm whether in boiling water or ice. At least it's consistent in its inaccuracy. Test your thermometer after buying and adjust your temp. targets accordingly.
July 25, 2012
Not accurate, don't buy
As many others have pointed out, this thermometer is all over the place in terms of accuracy. Mine read 220+ in boiling water, since it's sealed you can't calibrate. Buy another one.NB should really stop putting this in their starter kits.
April 27, 2012
Okay Reliability BUT Easily breakable
I've been brewing for about 2 1/2 years. I've had good consistent results with these thermometers. However, I'll soon be purchasing my fourth thermometer in that amount of time. These things will chip, crack and break if you look at them wrong. This weekend I broke my most recent lab thermometer. I was making a yeast starter and was taking a temperature reading as I was cooling the starter wort in my kitchen sink. The thermometer slipped out of my hand and dropped about two inches into my starter jar. The head cracked and it's contents (not mercury, but a petroleum based product) floated out into the starter.
January 17, 2012
Worked great
Worked great until I forgot it was sitting on a the top of a tote and I forgot to remove it before I opened it. I will probably upgrade to a digital or dial one instead, but it worked great.
December 29, 2011
Wildly Inaccurate
I wanted to check the temperature of a pot water to see how close I was to a boil. No bubbles were forming yet but the thermometer jumped right up to 220F. It was then I realized that my previous 2 mashes were totally off, and the beers are pretty undrinkable now. Do NOT buy this.
October 18, 2011
Q&A
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Browse 2 questions Browse 2 questions and 3 answers
How long is this thermometer? Diameter? 1/4" ish?
W P on Jan 31, 2016
BEST ANSWER: This thermometer is 12.2" long, and less than 3/8" in diameter. - Mike W , Northern Brewer
Is there mercury in this thermometer?
A shopper on Jan 16, 2017
BEST ANSWER: No. The liquid inside the bulb and capillary is made out of ethanol. Alcohol-based thermometers are the standard today for glass thermometers because they are cheaper to make than mercury-based thermometers and obviously less toxic.

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