Borosilicate glass

• 4X larger sealing surface increases lifetime and reliability
• Greaseless PTFE piston provides a 100% contamination-free seal
• Axial symmetric design guarantees its application in spinning experiments
• More economical to reduce experimental costs

These tubes are ideal for anaerobic and gas-tight NMR and EPR experiments. They offer a convenient flame-free sealing solution for air sensitive or volatile liquid samples. The robust sealing system allows pressure build-up inside sample.