Certified Valve Action® paint marker - Application: Perfectly suited for use on stainless steel or super alloys in industries where protection against corrosion, pitting, and quality loss is important. Design: Xylene-free, with low levels of chlorides, halogens, low-melting-point metals, and sulfur. Certified to US and international nuclear and armoring industry specifications. Certified to the following US and international standards: EDF PMUC, MIL-STD-2041D, U.S. DOE RDT F-7-3T (expired), U.S. Navy C3070. Meets the following requirements: less than 200 ppm total halogens, less than 250 ppm total refractory metals, less than 300 ppm total refractory metals, less than 200 ppm sulfur. Advantage: Quick-drying formula ensures abrasion-resistant and weather and UV-resistant markings, can be used without hesitation on stainless steel and other alloy metals where corrosion resistance is a must. Note: An analysis and certification of individual batches is available and provides fast and accurate information.