Test Standards are primarily used to verify if chrome, brass or stainless steel is present in your Industrial Metal Detector applications. Reliatech offers the metal sphere in sizes ranging from .5 mm Ferrous, Non Ferrous and 316 Stainless Steel increasing in size by .5 mm increments through and including 8.0 mm size. All material is manufactured in high-quality FDA approved Anti-Static material, natural with color coded deep engraving. Depending on your particular application, Reliatech offers a number of Test Standard types. Reliatech also can provide Certificates of Compliance for any metal size you order. All standards are engraved as Ferrous in RED ink, Non Ferrous in GREEN ink, Stainless Steel in BLUE ink.