Before revision: Design Temperature Color of liquid alcohol inside bulb °C °F57 135 Orange 68 155 Red 79 174 Yellow93 200 Green 141 286 Blue 182 360 Purple 227260 440 500 Black This chart from the fire safety standards indicates the color of the bulb and the respective operating temperature.
After revision: Design Temperature Color of liquid inside bulb °C °F57 135 Orange 68 155 Red 79 174 Yellow93 200 Green 141 286 Blue 182 360 Purple 227260 440 500 Black This chart from the fire safety standards indicates the color of the bulb and the respective operating temperature.