Customized Personal Protection, Disposable Thermometer - FDA Approved & Mercury Free, This flexible, disposable thermometer takes temperature in a range of 96.0 F to 104.8 F (also in Celcius) in 1 minute for oral readings or 3 minutes for auxiliary readings, no batteries required. Temperature is indicated by the last black dot on the chart. These thermometer strips are FDA approved, conform to ASTM safety requirements, are non-toxic, mercury free and latex free. Each piece comes individually sealed in a package with instructions. Proudly made in the USA. ... #TMT100 $0.63/each.