These sterile, polystyrene loops and needles are calibrated using a standard urea solution. A Thermo Scientific™ Nunc™ calibration certificate can be obtained upon request. With no need to flame, these loops and needles save you time. The risk of contamination is eliminated since these instruments are disposable. The surface of each loop and needle receives a special hydrophilic treatment to enhance the adhesion of droplets and prevent accidental discharge. Loops are color coded for easy identification.

Warning: This product is not approved or intended for, and should not be used for medical, clinical, surgical or other patient oriented applications.