The Falcon 352002 Round-bottom Tubes are a set of 300 5ml polypropylene tubes with a 12x75mm size. These tubes are suitable for use in various laboratory environments such as physical, dental, medical, microbiological, and biological laboratories. Made in the United States by the trusted brand Falcon, these tubes are ideal for storing and transporting samples in research and testing settings. The round-bottom design allows for easy mixing and the inclusion of a cork/stopper is not necessary for the intended use of these high-quality tubes. Non-sterile