National Sanitation Foundation

NSF replaced ARPANET in the year 1990.

an NSF cheque is often called a "bounced" cheque

The motto of NSF International is 'The public health and safety company'.

The presence of the NSF designation on pipe means it was tested for compliance with one or more voluntary national standards. Common designations include NSF-pw and NSF-61, both of which mean the pipe is intended for potable water applications. Pipe displaying NSF-dwv should only be used for drain, waste or vent applications.