The new inhibitor process PWP
(Pure Water Process)

As it has been widely demonstred, Lead is toxic for ingestion, this means that the greatest risk, connected with its leaching, involves all the faucets used to supply drinking water (lavatory and kitchen faucets).

Nickel is a toxic metal which is responsible of many allergies caused by its contact with human skin, for this reason it could be dangerous its leaching from all kinds of faucets. Thanks to the new process PWP (Pure Water Process), developed by Galvanofinish s.r.l., the leaching of toxics metals as Lead and Nickel in drinking water is prevented.

The treatment has been completely developed in Galvanofinish Lab and consists of two steps: the first step guarantees the chemical removal of Lead from faucets, valves, joints made of brass, the second step consists of the plating with an electrolical Nickel very hard and corosion-proof. It contains additives which avoid the leaching of Nickel ions when pieces come in contact with drinking water.

	Cu	Zn	Pb	Ni
Mix lavatory faucets	72	4,8	1,5-2	0,5-1,2
Mix kitchen faucets	53	7,05	0,9-1,5	1,1-1,5
Widespread lavatory faucets	64	25,12	0,5-0,9	0,8-1,1

The following results have been obtained testing pieces after PWP treatment (Units of measurement = µg/l):

From these results it is demonstred that PWP process allow products to respect international limits of leaching of toxic metals (Units of measurement = µg/l):

TAPS
	Cu	Zn	Pb	Ni
NSF- 61	130	300	Q test 11	20
NSF 61 Prop.65	ND	ND	5	ND
AS-NZS 4020 (Australia/New Zealand)	200	ND	10	20
Czech Republic Law N°37/2001 Sb	1000	ND	25	20