Note: Press the BACK button on your browser to return to NSF's Listings.

NSF End Use Code Designations:

Plastics materials and compounds are identified in Listings for specific end use applications. The classifications for the various uses are as follows:

Designations for Potable Water End Uses

	1.	Pipe
	2.	Fittings
	3.	Pipe & Fittings
	4.	Appurtenances and Coatings other than pipe or fittings
	5.	Special pipe applications (nonpressure or tubing)
	6.	Well casing pipe/couplings

Designations for Non-Potable Water End Uses

First Digit

	1.	Pipe
	2.	Fittings
	3.	Pipe & Fittings
	4.	Solvent Cement

Second Digit

	5.	DWV
	6.	Continuous Waste
	7.	Sewerage Systems
	8.	Drain, Waste and Vent; Continuous Waste and Sewerage Systems
	9.	Corrosive Waste

Note: Press the BACK button on your browser to return to NSF's Listings.