The 12 fibers are color coded to the industry standard: Blue, Orange, Green, Brown, Slate, White, Red, Black, Yellow, Violet,Rose, and Aqua. This pigtail is designed for use for high fiber count splicing applications. Unlike a patch cord—which has connectors on both ends—the bare fiber end of a pigtail is designed to be permanently spliced (either by fusion or. Ultra Polished Connectors (UPC) and Angled Polished Connectors (APC) ensures low insertion loss and minimal back reflection. All assemblies are marked with a unique ID-number and all The 410+ series has an extended operating temperature range, -40 oC to +70 oC.