These Thermo Scientific Nunc loops and needles are disposable. They are made out of nontoxic polystyrene. Molded with precision, these products can be used in a variety of industries, including research laboratories, pharmaceutics, and biotechnology, as well as in the production of diagnostic kits and vaccines. A smooth loop surface provides trouble-free inoculation. Accidental discharges are prevented thanks to liquid adherence properties. For easy identification, the needles are color coded. During the manufacturing process, they undergo hydrophilic treatment. Their radiation sterilization is another benefit.