<P> The glowing splint test is a test for an oxidising gas, such as oxygen . In this test, a splint is lit, allowed to burn for a few seconds, then blown out by mouth or by shaking . Whilst the ember at the tip is still glowing hot, the splint is introduced to the gas sample that has been trapped in a vessel . </P> <P> Upon exposure to concentrated oxygen gas, the glowing ember flares, and re-ignites to produce a sustained flame . The more concentrated the oxygen, the faster the wood burns, and the more intense the flame . This test is not specific for oxygen, but will react similarly for any oxidising gas (such as nitrous oxide) that supports the combustion of the splint . </P>

The standard lab thermometer in a high school science lab contains