Canker sore: A canker sore, also known as an aphthous ulcer, is a single pale or yellow ulcer with a red outer ring or a cluster of such ulcers in the mouth, usually on the cheeks, tongue, or inside the lip.
The Board will allow a maximum temperature of 120 degrees Fahrenheit. Hand sinks in commercial kitchens are only used by employees. These employees are typically washing and rinsing pots and pans in pot sinks which could have 140 degree water. Those pot sinks, in some kitchens are located right next to the hand sinks.
How a dishwasher works. 1  Cold water is piped into the machine from your home water supply. 2  The heating element at the bottom of the machine, powered by electricity, warms the water to a temperature of 30â60Â°C (86â140Â°F). That's far hotter than the water most people would use to wash by hand, which is why dishwashers are more hygienic (remove more bacteria) than ordinary hand-washing.