Inoculating loops and needles are devices used for inoculation, serial dilution, sterile sampling, transfer, and microbiological sample spreading. Options include color-coding, disposable, and materials such as polymers, aluminum, and other metals. Thermo Scientific™ Nunc™ Disposable Loops and Needles, created from nontoxic (USP Class VI) polystyrene material, provide users with a smooth loop surface for use in vaccine and diagnostic kits, pharmaceutical, and biotechnology.