Are Thermometers Still Made With Mercury?

thermometers-still-made-mercury Credit: Toshiyuki IMAI/CC-BY-SA 2.0

While the majority of thermometer manufacturers no longer make mercury thermometers as of March 2015, a few manufacturers still produce them for industrial or laboratory use. Many states, including California, Massachusetts and Washington, have passed laws to limit the manufacture or sale of mercury thermometers.

The EPA is committed to phasing out mercury thermometers entirely because mercury is a neurotoxin. In 2011, the National Institute of Standards and Technology stopped calibrating mercury thermometers, a task it had carried out for American thermometer manufacturers since 1901. Modern alternatives to mercury thermometers include digital thermometers and liquid-in-glass thermometers. Digital thermometers are more accurate than liquid-in-glass models.