PSS is an innovator when it comes to Polyphosphate solutions. The most notable product exclusively manufactured by PSS is a slowly-soluble glassy polyphosphate product known as SLOW PHOS®.


SLOW PHOS® is the perfect solution for potable water treatment applications. This product is available in small or large beads, and dissolves at a controlled concentration to prevent scale formation and corrosion. SLOW PHOS® can be scaled to fit particular treatment situations or requirements. Typically, a concentration of SLOW PHOS® at threshold levels of 0.5-5.0ppm polyphosphate will inhibit scale and corrosion. Product lifetime is approximately 3-6 months or longer (Depending on Use).


SLOW PHOS® has been certified under:

NSF/ANSI Standard 42: Drinking Water Treatment Units-Aesthetic Effects

NSF/ANSI Standard 60: Drinking Water Treatment Chemicals-Health Effects, for use in potable water systems at concentrations up to 14 mg/L (MUL) PO4.



Additional Certifications:


RoHS2 Compliant: SLOW PHOS® does not contain prohibited substances above the maximum concentration values (MCV) listed in Article 4 and Annex II of the European Union directive 2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic equipment (recast), also known as RoHS2.


European Standard EN 1208:2005 Compliant: SLOW PHOS® is compliant with European Standard EN 1208:2005 for chemicals used for treatment of water intended for human consumption.


REACH Compliance: SLOW PHOS® does not contain any chemicals on the REACH SVHC List.


European Legislation on Food Contact Materials: SLOW PHOS® does not apply any danger to health or environment according to article 3 in Framework Regulation 1935/2OO4/EC. SLOW PHOS® is manufactured according to Regulation 2O23/2OO6/EC on good manufacturing practice.





The above information is accurate to the best of our knowledge. However, since data, safety standards, and government regulations are subject to change and the conditions of handling and use or misuse are beyond our control, Manufacturer makes no warranty, either expressed or implied, with respect to the completeness or continuing accuracy of the information contained herein and disclaims all liability for reliance thereon. User should satisfy himself that he has all current data relevant to his particular use.






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