Hexagonal loop shaft improves grip, while the ultra smooth loop surfaces allow for easy streaking. Loops are sterile and free of lubricants, oils, and electrostatic charges. Available in choice of flexible or rigid plastic and color coded for easy product identification. Packed in re-sealable plastic pouches for use with the LoopCaddy Stand. Certificate of Calibration included. The Hardy Diagnostics manufacturing facility and quality management system comply with cGMP's and have achieved ISO 13485 certification as a medical device manufacturer. Option 1 Useful for picking colonies. Option 2 Place colony in tube. Option 3 Place bacteria on microscope slides.