https://en.gongdong.com/products/sampling-loop/ Sampling Loop GongdongTM disposable sampling loops and sterile disposable needles, are made from high-quality plastics with high precision molding process. Different color for easy identification. Used in bio- or pharmaceutical laboratories. Description of Sampling Loop 01 Used in lab to select, inoculate or transfer microbiological samples on media. 02 Color-coded for easy-identification of specimen handling. What is the Inoculation Loops? GongdongTM OEM inoculating loop and inoculating needle come in a variety of gauges, loop hole sizes, and colors to meet a wide range of laboratory needs. Smooth and flexible inoculating loops allow for smooth, uniform streaking without harming gel surfaces. There are both sterile and non-sterile options available. Inoculating loop and wires are used to introduce microorganisms into a culture medium.