REAGENT, DIRECT TOTAL IRON BINDING (300/BX) VITROS® MicroTip™ is a unique technology because it doesn’t require drains, plumbing, fixed probes, or mixing assemblies to perform therapeutic and abused drug testing, specific proteins and user-defined applications Liquid, ready-to-use reagents need no preparation (except caffeine reagents) Reagent packs are automatically opened and closed ensuring enhanced reagent and calibration stability, reducing contamination, evaporation and reagent cross-talk, and ensuring quality results Dual-chamber blow-molded pack Full threads for caps designed for mechanical capping and decapping WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov