Stainless Steel with colored scale

Recommended Process Line for ChemPolish™ for 300 Series SS with Colored Scale

Step	Process Line	Concentration & Temperature	Time	Heater Equipment	Process Equipment	Exhaust Required
1.	Alkaline Clean: MicroClean™ CuLX (RD-68)	25% by volume 130°-180°F (45°-80°C)	5-10 Minutes	SS or Quartz - OK Teflon - OK Titanium - OK	SS - OK PVC - OK at lower temps PP - OK	No
2.	Cold Rinses, cascaded. Tap Water OK Can usually be sent to drain with only pH adjustment, if needed
3.	Alkaline Descale™ (RDZ-1734)	50% by volume Part A + Part B 180°-200° F (80°-90° C)	60-90 Minutes	Teflon - No Titanium - OK Quartz - OK	PVC - No SS - OK PP - OK	Yes 180° F Max w/reinforcement
4.	Cold Rinses, cascaded Tap Water OK, Can usually be sent to drain with only pH adjustment, if needed
5.	Descale Remover™ (RDZ-1735)	100% by volume 70°- 90°F (20°-30°C)	30-60 Seconds	Teflon - OK Titanium - No Quartz - OK	PVC – OK PE - OK PP – OK	Yes
6.	Cold Rinses, Cascaded. Tap water OK (May need to be treated for Nickel and Chromium removal & pH adjustment).
7.	ChemPolish™ (RD-5)	100% by volume 175°-185° F (78°-82° C)	3-8 Minutes	Titanium - ?? Quartz - OK	CPVC - OK PP - OK PVDF - OK	Yes
8.	Cold Rinses, cascaded. Deionized Water for best results. (Will need to be treated for Nickel and Chromium removal & pH adjustment)
9.	Nitric Acid Desmut (Needed only when SS has significant Carbon Content)	50% by Volume Commercial 42° Be’ Nitric Acid Unheated	30-60 Seconds	DNA	PE - OK PP - OK PVC - OK SS - OK	No
10.	Cold Rinses, cascaded Deionized Water for best results (Can usually be sent to drain with only pH adjust)