WAC 246-215-04222. Accuracy — Temperature measuring devices, ambient air and water (FDA Food Code 4-203.12)

(1) Ambient air and water temperature measuring devices that are scaled in Celsius or dually scaled in Celsius and Fahrenheit must be designed to be easily readable and accurate to ± 1.5°C in the intended range of use. (2) Ambient air and water temperature measuring devices that are scaled only in Fahrenheit must be accurate to ± 3°F in the intended range of use.