An NSF-certified residential dishwasher achieves stringent sanitizing standards, including a 99.999 percent reduction in bacteria and a final rinse temperature of at least 150 degrees Fahrenheit. An NSF-certified commercial, stationary-rack dishwasher achieves the same reduction in bacteria, and it reaches a final rinse temperature of 165 degrees.
Dishwashers that have the NSF certification include a special sanitizing cycle, which can sanitize baby bottles and plastic cups. Some dishwasher models with the NSF certification use water that is more than 160 degrees Fahrenheit for the entire sanitizing cycle. NSF International is an independent organization that tests the quality and performance of water filters, appliances and other food service equipment.