FARGO — The principal of a liquid-in-glass thermometer is that ... is that the freezing temperature of mercury is around -38F, so a mercury thermometer is not useful in extremely cold weather.

SFU EHS will swap your mercury thermometers with non-mercury alternatives for free. Simon Fraser University is committed to eliminating non-essential uses of mercury and mercury-containing products.

We test thermometers for accuracy, based on their performance in comparison to a mercury thermometer ... how much effort it took to get the glass surface of the probe clean after use.