...      ... NSF Certified Products

The following products are currently registered in the NSF database.

GW Carbon Series

Product name GW followed by XXX  such as  GW 12x30  GW-H 20x40  GW-H 32x60  GW-HH 60x150  GW50x100. GW may be followed by a hyphen and/or letter and number combinations. The numbers indicate carbon mesh sizes. The letters between  the   GW and the mesh size indicate the treatment process used.

PGW Carbon Series

 Product name PGW followed by XXX  such as PGW100MP,  PGW100MD, PGW-G100MP,PGW-G100MD, PGWH-100MP, PGWH-G100MP, PGWH-G100MP, PGWH-100MD.   PGW may be followed by a hyphen and/or letter and number combinations. The numbers indicate carbon mesh sizes.   The letters between  the  P GW and the mesh size indicate the treatment process used.

      NSF  is a trade mark of NSF International and the products above are registered under NSF/ANSI 42 and NSF International.