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Cortec Corp. has announced that VpCI-641 and VpCI-641 PTSA corrosion inhibitors for hydrotesting and freshwater cooling systems have earned the USDA Certified Biobased Product label. These products represent Cortec’s commitment to developing technologies that use biodegradable and renewable materials where possible, allowing industries to fight corrosion in an environmentally responsible manner. VpCI-641 offers an economical, “greener” alternative to other hydrotesting products on the market that are not biobased and must be used at a higher dosage. VpCI-641 is a water-based blend of contact and Vapor phase Corrosion Inhibitors for protection of ferrous and non-ferrous metals (including copper, aluminum, and brass) in industrial waters.