• Made of polypropylene
• Free of RNase, DNase, Pyrogen, and DNA
• The locking mechanism prevents accidental opening
• Pierceable lid
• Autoclavable
• Graduated
• Withstands centrifugation up to 20,000g

These Secure-Lock™ microcentrifuge tubes offer a special locking system that can be bent upward to lock on the cap, ensuring extra protection during critical steps such as boiling, freezing, centrifugation, and shipping. Tubes are graduated at 0.5, 1.0, and 1.5 ml. Lids can be pierced easily with a syringe needle. The etched surface on the side of the tube is for sample identification. Can be used at extreme temperatures from -175 °C to +121 °C. Autoclavable. Maximum centrifugation RCF: 20,000g. Packaged in tamperproof resealable safety-lock bags of 500 tubes.