Made of high-quality medical-grade polypropylene, these tubes are designed to withstand extreme temperatures and are fully autoclavable for maximum sterility. These microcentrifuge tubes feature an easy-to-open snap cap for secure and reliable sealing. They are certified RNase-, DNase-, and pyrogen-free, ensuring contamination-free sample storage and processing. With multiple capacities of 0.5ml up to 2.0ml, these tubes are perfect for a wide range of laboratory applications, including centrifugation, storage, and sample preparation.